diff --git a/CoreIntegrationTests/CoreIntegrationTests.csproj b/CoreIntegrationTests/CoreIntegrationTests.csproj
index e6fec96..2e4ad1b 100644
--- a/CoreIntegrationTests/CoreIntegrationTests.csproj
+++ b/CoreIntegrationTests/CoreIntegrationTests.csproj
@@ -7,7 +7,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0-preview-20170810-02" />
     <PackageReference Include="MongoDB.Driver" Version="2.4.4" />
-    <PackageReference Include="MongoDbGenericRepository" Version="1.2.0" />
+    <PackageReference Include="MongoDbGenericRepository" Version="1.2.1" />
     <PackageReference Include="xunit" Version="2.3.0-beta5-build3769" />
     <PackageReference Include="xunit.runner.console" Version="2.3.0-beta5-build3769" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.0-beta5-build3769" />
diff --git a/CoreIntegrationTests/Infrastructure/TestRepository.cs b/CoreIntegrationTests/Infrastructure/TestRepository.cs
index aaec153..ae2a1d6 100644
--- a/CoreIntegrationTests/Infrastructure/TestRepository.cs
+++ b/CoreIntegrationTests/Infrastructure/TestRepository.cs
@@ -9,7 +9,7 @@ namespace IntegrationTests.Infrastructure
     {
 
         const string connectionString = "mongodb://localhost:27017";
-        private static readonly ITestRepository instance = new TestRepository(connectionString, "MongoDbTests");
+        private static readonly ITestRepository _instance = new TestRepository(connectionString, "MongoDbTests");
 
         // Explicit static constructor to tell C# compiler
         // not to mark type as beforefieldinit
@@ -26,7 +26,7 @@ namespace IntegrationTests.Infrastructure
         {
             get
             {
-                return instance;
+                return _instance;
             }
         }
 
diff --git a/IntegrationTests/IntegrationTests.csproj b/IntegrationTests/IntegrationTests.csproj
index 2ed74d2..58a2d21 100644
--- a/IntegrationTests/IntegrationTests.csproj
+++ b/IntegrationTests/IntegrationTests.csproj
@@ -31,16 +31,16 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="MongoDB.Bson, Version=2.4.4.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.2.0\lib\net45\MongoDB.Bson.dll</HintPath>
+      <HintPath>..\packages\MongoDbGenericRepository.1.2.1\lib\net45\MongoDB.Bson.dll</HintPath>
     </Reference>
     <Reference Include="MongoDB.Driver, Version=2.4.4.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.2.0\lib\net45\MongoDB.Driver.dll</HintPath>
+      <HintPath>..\packages\MongoDbGenericRepository.1.2.1\lib\net45\MongoDB.Driver.dll</HintPath>
     </Reference>
     <Reference Include="MongoDB.Driver.Core, Version=2.4.4.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.2.0\lib\net45\MongoDB.Driver.Core.dll</HintPath>
+      <HintPath>..\packages\MongoDbGenericRepository.1.2.1\lib\net45\MongoDB.Driver.Core.dll</HintPath>
     </Reference>
     <Reference Include="MongoDbGenericRepository, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.2.0\lib\net45\MongoDbGenericRepository.dll</HintPath>
+      <HintPath>..\packages\MongoDbGenericRepository.1.2.1\lib\net45\MongoDbGenericRepository.dll</HintPath>
     </Reference>
     <Reference Include="nunit.framework, Version=3.7.1.0, Culture=neutral, PublicKeyToken=2638cd05610744eb, processorArchitecture=MSIL">
       <HintPath>..\packages\NUnit.3.7.1\lib\net45\nunit.framework.dll</HintPath>
@@ -50,7 +50,7 @@
     <Reference Include="System.Core" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Runtime.InteropServices.RuntimeInformation, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
-      <HintPath>..\packages\MongoDbGenericRepository.1.2.0\lib\net45\System.Runtime.InteropServices.RuntimeInformation.dll</HintPath>
+      <HintPath>..\packages\MongoDbGenericRepository.1.2.1\lib\net45\System.Runtime.InteropServices.RuntimeInformation.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
diff --git a/IntegrationTests/packages.config b/IntegrationTests/packages.config
index f6aeddd..8ef186d 100644
--- a/IntegrationTests/packages.config
+++ b/IntegrationTests/packages.config
@@ -3,7 +3,7 @@
   <package id="MongoDB.Bson" version="2.4.4" targetFramework="net461" />
   <package id="MongoDB.Driver" version="2.4.4" targetFramework="net461" />
   <package id="MongoDB.Driver.Core" version="2.4.4" targetFramework="net461" />
-  <package id="MongoDbGenericRepository" version="1.2.0" targetFramework="net461" />
+  <package id="MongoDbGenericRepository" version="1.2.1" targetFramework="net461" />
   <package id="NUnit" version="3.7.1" targetFramework="net461" />
   <package id="NUnit.ConsoleRunner" version="3.7.0" targetFramework="net461" />
   <package id="System.Runtime.InteropServices.RuntimeInformation" version="4.0.0" targetFramework="net461" />
diff --git a/MongoDbGenericRepository.sln b/MongoDbGenericRepository.sln
index 29387f9..cb7da2b 100644
--- a/MongoDbGenericRepository.sln
+++ b/MongoDbGenericRepository.sln
@@ -7,7 +7,7 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IntegrationTests", "Integra
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "MongoDbGenericRepository", "MongoDbGenericRepository\MongoDbGenericRepository.csproj", "{EFC776C4-2AF3-440C-BE80-3FBE335817A5}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CoreIntegrationTests", "CoreIntegrationTests\CoreIntegrationTests.csproj", "{C640C106-7A25-4E49-A0CF-E4F248E5A97F}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CoreIntegrationTests", "CoreIntegrationTests\CoreIntegrationTests.csproj", "{C640C106-7A25-4E49-A0CF-E4F248E5A97F}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/MongoDbGenericRepository/BaseMongoDbRepository.cs b/MongoDbGenericRepository/BaseMongoDbRepository.cs
index 986fbbc..d9e90e5 100644
--- a/MongoDbGenericRepository/BaseMongoDbRepository.cs
+++ b/MongoDbGenericRepository/BaseMongoDbRepository.cs
@@ -801,11 +801,6 @@ namespace MongoDbGenericRepository
             {
                 document.Id = Guid.NewGuid();
             }
-
-            if (document.AddedAtUtc == default(DateTime))
-            {
-                document.AddedAtUtc = DateTime.UtcNow;
-            }
         }
 
         #endregion
diff --git a/MongoDbGenericRepository/IMongoDbContext.cs b/MongoDbGenericRepository/IMongoDbContext.cs
index c2b0591..31fee2a 100644
--- a/MongoDbGenericRepository/IMongoDbContext.cs
+++ b/MongoDbGenericRepository/IMongoDbContext.cs
@@ -8,6 +8,16 @@ namespace MongoDbGenericRepository
     /// </summary>
     public interface IMongoDbContext
     {
+        /// <summary>
+        /// The IMongoClient from the official MongoDb driver
+        /// </summary>
+        IMongoClient Client { get; }
+
+        /// <summary>
+        /// The IMongoDatabase from the official Mongodb driver
+        /// </summary>
+        IMongoDatabase Database { get; }
+
         /// <summary>
         /// The private GetCollection method
         /// </summary>
diff --git a/MongoDbGenericRepository/Models/IDocument.cs b/MongoDbGenericRepository/Models/IDocument.cs
index 0facbaa..bdad597 100644
--- a/MongoDbGenericRepository/Models/IDocument.cs
+++ b/MongoDbGenericRepository/Models/IDocument.cs
@@ -8,10 +8,6 @@ namespace MongoDbGenericRepository.Models
     /// </summary>
     public interface IDocument
     {
-        /// <summary>
-        /// The date and UTC time at which the document was added to the collection.
-        /// </summary>
-        DateTime AddedAtUtc { get; set; }
         /// <summary>
         /// The Guid, which must be decorated with the [BsonId] attribute 
         /// if you want the MongoDb C# driver to consider it to be the document ID.
diff --git a/MongoDbGenericRepository/MongoDbContext.cs b/MongoDbGenericRepository/MongoDbContext.cs
index 71bb8d8..dd21e9d 100644
--- a/MongoDbGenericRepository/MongoDbContext.cs
+++ b/MongoDbGenericRepository/MongoDbContext.cs
@@ -8,8 +8,15 @@ namespace MongoDbGenericRepository
     /// </summary>
     public class MongoDbContext : IMongoDbContext
     {
-        private readonly IMongoClient _client;
-        private readonly IMongoDatabase _database;
+        /// <summary>
+        /// The IMongoClient from the official MongoDb driver
+        /// </summary>
+        public IMongoClient Client { get; }
+
+        /// <summary>
+        /// The IMongoDatabase from the official Mongodb driver
+        /// </summary>
+        public IMongoDatabase Database { get; }
 
         static MongoDbContext()
         {
@@ -17,15 +24,25 @@ namespace MongoDbGenericRepository
             MongoDefaults.GuidRepresentation = MongoDB.Bson.GuidRepresentation.Standard;
         }
 
+        /// <summary>
+        /// The constructor of the MongoDbContext, it needs a an object implementing <see cref="IMongoDatabase"/>.
+        /// </summary>
+        /// <param name="mongoDatabase">An object implementing IMongoDatabase</param>
+        public MongoDbContext(IMongoDatabase mongoDatabase)
+        {
+            Database = mongoDatabase;
+            Client = Database.Client;
+        }
+
         /// <summary>
         /// The constructor of the MongoDbContext, it needs a connection string and a database name. 
         /// </summary>
-        /// <param name="connectionString"></param>
-        /// <param name="databaseName"></param>
+        /// <param name="connectionString">The connections string.</param>
+        /// <param name="databaseName">The name of your database.</param>
         public MongoDbContext(string connectionString, string databaseName)
         {
-            _client = new MongoClient(connectionString);
-            _database = _client.GetDatabase(databaseName);
+            Client = new MongoClient(connectionString);
+            Database = Client.GetDatabase(databaseName);
         }
 
         /// <summary>
@@ -35,7 +52,7 @@ namespace MongoDbGenericRepository
         /// <returns></returns>
         public IMongoCollection<TDocument> GetCollection<TDocument>()
         {
-            return _database.GetCollection<TDocument>(Pluralize<TDocument>());
+            return Database.GetCollection<TDocument>(Pluralize<TDocument>());
         }
 
         /// <summary>
@@ -45,7 +62,7 @@ namespace MongoDbGenericRepository
         /// <param name="partitionKey">The value of the partition key.</param>
         public IMongoCollection<TDocument> GetCollection<TDocument>(string partitionKey) where TDocument : IDocument
         {
-            return _database.GetCollection<TDocument>(partitionKey +"-"+ Pluralize<TDocument>());
+            return Database.GetCollection<TDocument>(partitionKey +"-"+ Pluralize<TDocument>());
         }
 
         /// <summary>
@@ -54,7 +71,7 @@ namespace MongoDbGenericRepository
         /// <typeparam name="TDocument"></typeparam>
         public void DropCollection<TDocument>()
         {
-            _database.DropCollection(Pluralize<TDocument>());
+            Database.DropCollection(Pluralize<TDocument>());
         }
 
         /// <summary>
@@ -63,7 +80,7 @@ namespace MongoDbGenericRepository
         /// <typeparam name="TDocument"></typeparam>
         public void DropCollection<TDocument>(string partitionKey)
         {
-            _database.DropCollection(partitionKey + "-" + Pluralize<TDocument>());
+            Database.DropCollection(partitionKey + "-" + Pluralize<TDocument>());
         }
 
         /// <summary>
diff --git a/MongoDbGenericRepository/MongoDbGenericRepository.nuspec b/MongoDbGenericRepository/MongoDbGenericRepository.nuspec
index e13058c..6aba088 100644
--- a/MongoDbGenericRepository/MongoDbGenericRepository.nuspec
+++ b/MongoDbGenericRepository/MongoDbGenericRepository.nuspec
@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>MongoDbGenericRepository</id>
-    <version>1.2</version>
+    <version>1.2.1</version>
     <title>MongoDb Generic Repository</title>
     <authors>Alexandre Spieser</authors>
     <owners>Alexandre Spieser</owners>
@@ -10,7 +10,7 @@
     <projectUrl>https://github.com/alexandre-spieser/mongodb-generic-repository</projectUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>A generic repository implementation using the MongoDB C# Sharp 2.0 driver.</description>
-    <releaseNotes>.NET Core support added.</releaseNotes>
+    <releaseNotes>Exposed core MongoDb driver objects and removed the AddedAtUtc property constraint from the IDocument interface.</releaseNotes>
     <copyright>Copyright 2017 (c) Alexandre Spieser. All rights reserved.</copyright>
     <tags>MongoDb Repository Generic NoSql</tags>
   </metadata>
diff --git a/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.dll b/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.dll
index 6c63b64..c5464da 100644
Binary files a/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.dll and b/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.dll differ
diff --git a/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.xml b/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.xml
index dcf020f..9afe743 100644
--- a/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.xml
+++ b/MongoDbGenericRepository/lib/net45/MongoDbGenericRepository.xml
@@ -561,6 +561,16 @@
             This is the interface of the IMongoDbContext which is managed by the <see cref="T:MongoDbGenericRepository.BaseMongoRepository"/>.
             </summary>
         </member>
+        <member name="P:MongoDbGenericRepository.IMongoDbContext.Client">
+            <summary>
+            The IMongoClient from the official MongoDb driver
+            </summary>
+        </member>
+        <member name="P:MongoDbGenericRepository.IMongoDbContext.Database">
+            <summary>
+            The IMongoDatabase from the official Mongodb driver
+            </summary>
+        </member>
         <member name="M:MongoDbGenericRepository.IMongoDbContext.GetCollection``1">
             <summary>
             The private GetCollection method
@@ -618,11 +628,6 @@
             Your document must implement this class in order for the MongoDbRepository to handle them.
             </summary>
         </member>
-        <member name="P:MongoDbGenericRepository.Models.IDocument.AddedAtUtc">
-            <summary>
-            The date and UTC time at which the document was added to the collection.
-            </summary>
-        </member>
         <member name="P:MongoDbGenericRepository.Models.IDocument.Id">
             <summary>
             The Guid, which must be decorated with the [BsonId] attribute 
@@ -673,12 +678,28 @@
             The MongoDb context
             </summary>
         </member>
+        <member name="P:MongoDbGenericRepository.MongoDbContext.Client">
+            <summary>
+            The IMongoClient from the official MongoDb driver
+            </summary>
+        </member>
+        <member name="P:MongoDbGenericRepository.MongoDbContext.Database">
+            <summary>
+            The IMongoDatabase from the official Mongodb driver
+            </summary>
+        </member>
+        <member name="M:MongoDbGenericRepository.MongoDbContext.#ctor(MongoDB.Driver.IMongoDatabase)">
+            <summary>
+            The constructor of the MongoDbContext, it needs a an object implementing <see cref="T:MongoDB.Driver.IMongoDatabase"/>.
+            </summary>
+            <param name="mongoDatabase">An object implementing IMongoDatabase</param>
+        </member>
         <member name="M:MongoDbGenericRepository.MongoDbContext.#ctor(System.String,System.String)">
             <summary>
             The constructor of the MongoDbContext, it needs a connection string and a database name. 
             </summary>
-            <param name="connectionString"></param>
-            <param name="databaseName"></param>
+            <param name="connectionString">The connections string.</param>
+            <param name="databaseName">The name of your database.</param>
         </member>
         <member name="M:MongoDbGenericRepository.MongoDbContext.GetCollection``1">
             <summary>
diff --git a/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.dll b/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.dll
index 02726da..62f6c98 100644
Binary files a/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.dll and b/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.dll differ
diff --git a/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.xml b/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.xml
index dcf020f..9afe743 100644
--- a/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.xml
+++ b/MongoDbGenericRepository/lib/netstandard1.5/MongoDbGenericRepository.xml
@@ -561,6 +561,16 @@
             This is the interface of the IMongoDbContext which is managed by the <see cref="T:MongoDbGenericRepository.BaseMongoRepository"/>.
             </summary>
         </member>
+        <member name="P:MongoDbGenericRepository.IMongoDbContext.Client">
+            <summary>
+            The IMongoClient from the official MongoDb driver
+            </summary>
+        </member>
+        <member name="P:MongoDbGenericRepository.IMongoDbContext.Database">
+            <summary>
+            The IMongoDatabase from the official Mongodb driver
+            </summary>
+        </member>
         <member name="M:MongoDbGenericRepository.IMongoDbContext.GetCollection``1">
             <summary>
             The private GetCollection method
@@ -618,11 +628,6 @@
             Your document must implement this class in order for the MongoDbRepository to handle them.
             </summary>
         </member>
-        <member name="P:MongoDbGenericRepository.Models.IDocument.AddedAtUtc">
-            <summary>
-            The date and UTC time at which the document was added to the collection.
-            </summary>
-        </member>
         <member name="P:MongoDbGenericRepository.Models.IDocument.Id">
             <summary>
             The Guid, which must be decorated with the [BsonId] attribute 
@@ -673,12 +678,28 @@
             The MongoDb context
             </summary>
         </member>
+        <member name="P:MongoDbGenericRepository.MongoDbContext.Client">
+            <summary>
+            The IMongoClient from the official MongoDb driver
+            </summary>
+        </member>
+        <member name="P:MongoDbGenericRepository.MongoDbContext.Database">
+            <summary>
+            The IMongoDatabase from the official Mongodb driver
+            </summary>
+        </member>
+        <member name="M:MongoDbGenericRepository.MongoDbContext.#ctor(MongoDB.Driver.IMongoDatabase)">
+            <summary>
+            The constructor of the MongoDbContext, it needs a an object implementing <see cref="T:MongoDB.Driver.IMongoDatabase"/>.
+            </summary>
+            <param name="mongoDatabase">An object implementing IMongoDatabase</param>
+        </member>
         <member name="M:MongoDbGenericRepository.MongoDbContext.#ctor(System.String,System.String)">
             <summary>
             The constructor of the MongoDbContext, it needs a connection string and a database name. 
             </summary>
-            <param name="connectionString"></param>
-            <param name="databaseName"></param>
+            <param name="connectionString">The connections string.</param>
+            <param name="databaseName">The name of your database.</param>
         </member>
         <member name="M:MongoDbGenericRepository.MongoDbContext.GetCollection``1">
             <summary>
diff --git a/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.dll b/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.dll
index fafd6bb..8a408e0 100644
Binary files a/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.dll and b/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.dll differ
diff --git a/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.xml b/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.xml
index dcf020f..9afe743 100644
--- a/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.xml
+++ b/MongoDbGenericRepository/lib/netstandard2.0/MongoDbGenericRepository.xml
@@ -561,6 +561,16 @@
             This is the interface of the IMongoDbContext which is managed by the <see cref="T:MongoDbGenericRepository.BaseMongoRepository"/>.
             </summary>
         </member>
+        <member name="P:MongoDbGenericRepository.IMongoDbContext.Client">
+            <summary>
+            The IMongoClient from the official MongoDb driver
+            </summary>
+        </member>
+        <member name="P:MongoDbGenericRepository.IMongoDbContext.Database">
+            <summary>
+            The IMongoDatabase from the official Mongodb driver
+            </summary>
+        </member>
         <member name="M:MongoDbGenericRepository.IMongoDbContext.GetCollection``1">
             <summary>
             The private GetCollection method
@@ -618,11 +628,6 @@
             Your document must implement this class in order for the MongoDbRepository to handle them.
             </summary>
         </member>
-        <member name="P:MongoDbGenericRepository.Models.IDocument.AddedAtUtc">
-            <summary>
-            The date and UTC time at which the document was added to the collection.
-            </summary>
-        </member>
         <member name="P:MongoDbGenericRepository.Models.IDocument.Id">
             <summary>
             The Guid, which must be decorated with the [BsonId] attribute 
@@ -673,12 +678,28 @@
             The MongoDb context
             </summary>
         </member>
+        <member name="P:MongoDbGenericRepository.MongoDbContext.Client">
+            <summary>
+            The IMongoClient from the official MongoDb driver
+            </summary>
+        </member>
+        <member name="P:MongoDbGenericRepository.MongoDbContext.Database">
+            <summary>
+            The IMongoDatabase from the official Mongodb driver
+            </summary>
+        </member>
+        <member name="M:MongoDbGenericRepository.MongoDbContext.#ctor(MongoDB.Driver.IMongoDatabase)">
+            <summary>
+            The constructor of the MongoDbContext, it needs a an object implementing <see cref="T:MongoDB.Driver.IMongoDatabase"/>.
+            </summary>
+            <param name="mongoDatabase">An object implementing IMongoDatabase</param>
+        </member>
         <member name="M:MongoDbGenericRepository.MongoDbContext.#ctor(System.String,System.String)">
             <summary>
             The constructor of the MongoDbContext, it needs a connection string and a database name. 
             </summary>
-            <param name="connectionString"></param>
-            <param name="databaseName"></param>
+            <param name="connectionString">The connections string.</param>
+            <param name="databaseName">The name of your database.</param>
         </member>
         <member name="M:MongoDbGenericRepository.MongoDbContext.GetCollection``1">
             <summary>