Fix Sandcastle warnings.

Author: rstam

Docs/Api/CSharpDriverDocs.shfbproj

@@ -79,7 +79,7 @@
     <CopyrightText>Copyright &amp;#169%3b 2010&amp;ndash%3bpresent MongoDB Inc.</CopyrightText>
     <FeedbackEMailAddress>dotnet-driver%40mongodb.com</FeedbackEMailAddress>
     <FeedbackEMailLinkText>MongoDB</FeedbackEMailLinkText>
-    <FrameworkVersion>.NET Framework 4.5.2</FrameworkVersion>
+    <FrameworkVersion>.NET Framework 4.7.2</FrameworkVersion>
     <HelpFileVersion>0.0.0.0</HelpFileVersion>
     <MissingTags>Summary, Parameter, Returns, AutoDocumentCtors, Namespace, TypeParameter, AutoDocumentDispose</MissingTags>
     <SyntaxFilters>C#, Visual Basic, F#</SyntaxFilters>

src/MongoDB.Driver/ChangeStreamPreAndPostImagesOptions.cs

@@ -36,6 +36,7 @@ public ChangeStreamPreAndPostImagesOptions()
         /// <summary>
         /// Initializes a new instance of the <see cref="ChangeStreamPreAndPostImagesOptions"/> class.
         /// </summary>
+        /// <param name="bsonDocument">The backing document.</param>
         public ChangeStreamPreAndPostImagesOptions(BsonDocument bsonDocument)
             : base(bsonDocument, ChangeStreamPreAndPostImagesOptionsSerializer.Instance)
         {

src/MongoDB.Driver/ClusteredIndexOptions.cs

@@ -21,6 +21,7 @@ namespace MongoDB.Driver
     /// <summary>
     /// Options for creating a clustered index.
     /// </summary>
+    /// <typeparam name="TDocument">The document type.</typeparam>
     public class ClusteredIndexOptions<TDocument>
     {
         private IndexKeysDefinition<TDocument> _key;

src/MongoDB.Driver/IAggregateFluent.cs

@@ -140,6 +140,9 @@ IAggregateFluent<TNewResult> BucketAuto<TValue, TNewResult>(
         /// <summary>
         /// Appends a $densify stage to the pipeline.
         /// </summary>
+        /// <param name="field">The field.</param>
+        /// <param name="range">The range.</param>
+        /// <param name="partitionByFields">The fields to partition by.</param>
         /// <returns>The fluent aggregate interface.</returns>
         IAggregateFluent<TResult> Densify(
             FieldDefinition<TResult> field,
@@ -149,6 +152,9 @@ IAggregateFluent<TResult> Densify(
         /// <summary>
         /// Appends a $densify stage to the pipeline.
         /// </summary>
+        /// <param name="field">The field.</param>
+        /// <param name="range">The range.</param>
+        /// <param name="partitionByFields">The fields to partition by.</param>
         /// <returns>The fluent aggregate interface.</returns>
         IAggregateFluent<TResult> Densify(
             FieldDefinition<TResult> field,

src/MongoDB.Driver/StringOrRegularExpression.cs

@@ -29,18 +29,21 @@ public class StringOrRegularExpression
         /// Implicit conversion from string to StringOrRegularExpression.
         /// </summary>
         /// <param name="value">A StringOrRegularExpression.</param>
+        /// <returns>A StringOrRegularExpression.</returns>
         public static implicit operator StringOrRegularExpression(string value) => new StringOrRegularExpression(value);
 
         /// <summary>
         /// Implicit conversion from BsonRegularExpression to StringOrRegularExpression.
         /// </summary>
         /// <param name="value">A StringOrRegularExpression.</param>
+        /// <returns>A StringOrRegularExpression.</returns>
         public static implicit operator StringOrRegularExpression(BsonRegularExpression value) => new StringOrRegularExpression(value);
 
         /// <summary>
         /// Implicit conversion from Regex to StringOrRegularExpression.
         /// </summary>
         /// <param name="value">A StringOrRegularExpression.</param>
+        /// <returns>A StringOrRegularExpression.</returns>
         public static implicit operator StringOrRegularExpression(Regex value) => new StringOrRegularExpression(new BsonRegularExpression(value));
         #endregion