Add comments about the custom file update methods

Author: Caitlin Bales (MSFT)

Templates/Android/BaseModel.template.tt

@@ -801,6 +801,11 @@ public {1} {2}{3}{4} {{";
 @"// **NOTE** This file was generated by a tool and any changes will be overwritten.";
     }
 
+	/*
+	 * Add additional methods to a generated class
+	 * @param className The class that you will be adding methods to
+	 * @return The additional text to add to the generated file
+	 */
 	public string AddCustomCode(string className) {
 		CustomMethods customMethods = new CustomMethods();
 		var type = customMethods.GetType();
@@ -809,6 +814,11 @@ public {1} {2}{3}{4} {{";
 		return property != null ? property.GetValue(customMethods).ToString() : string.Empty;
 	}
 
+	/*
+	 * Add additional import statements to a generated class
+	 * @param className The class that you will be adding methods to
+	 * @return The additional text to add to the generated file
+	 */
 	public string AddCustomImport(string className) {
 		CustomImports customImports = new CustomImports();
 		var type = customImports.GetType();
@@ -820,7 +830,6 @@ public {1} {2}{3}{4} {{";
 	/*
 	 * Find and replace overwrite values for the given class
 	 * @param className The class that you will be applying overwrites to
-	 *
 	 * @return An empty string (does not write anything new to the file)
 	 */
 	public string PostProcess(string className)

src/GraphODataTemplateWriter/CodeHelpers/Android/CustomImports.cs

@@ -6,6 +6,12 @@
 
 namespace Microsoft.Graph.ODataTemplateWriter.CodeHelpers.Android
 {
+    /**
+     * This class contains a list of constants that define import statements that should be
+     * added at generation time
+     * The field name should be equal to the name of the class you wish to edit
+     * This will be used in BaseModel.template.tt in the AddCustomImports() method
+     */
     public class CustomImports
     {
         public const string UploadSession = "import com.microsoft.graph.concurrency.ChunkedUploadProvider;\r\n";

src/GraphODataTemplateWriter/CodeHelpers/Android/CustomMethods.cs

@@ -6,6 +6,12 @@
 
 namespace Microsoft.Graph.ODataTemplateWriter.CodeHelpers.Android
 {
+    /**
+     * This class contains a list of constants that define methods that should be
+     * added at generation time
+     * The field name should be equal to the name of the class you wish to edit
+     * This will be used in BaseModel.template.tt in the AddCustomCode() method
+     */
     public class CustomMethods
     {
         public const string DriveItemRequestBuilder = 

src/GraphODataTemplateWriter/CodeHelpers/Android/CustomOverwrites.cs

@@ -9,7 +9,7 @@ namespace Microsoft.Graph.ODataTemplateWriter.CodeHelpers.Android
     /**
      * This class contains a list of constants that define code snippets that should
      * be overwritten at generation time 
-     * The field name should be equal to the class name you wish to edit
+     * The field name should be equal to the name of the class you wish to edit
      * The dictionary value should contain two string, the first is the search value
      * and the latter is the replace value
      * This will be used in BaseModel.template.tt in the PostProcess() method