Add DetectNoop back as a request body parameter

Closes #1786

Author: gmarz

src/Nest/Document/Single/Update/UpdateRequest.cs

@@ -34,6 +34,9 @@ public partial interface IUpdateRequest<TDocument, TPartialDocument>
 
 		[JsonProperty(PropertyName = "doc")]
 		TPartialDocument Doc { get; set; }
+
+		[JsonProperty(PropertyName = "detect_noop")]
+		bool? DetectNoop { get; set; }
 	}
 
 	public partial class UpdateRequest<TDocument, TPartialDocument>
@@ -47,6 +50,7 @@ public partial class UpdateRequest<TDocument, TPartialDocument>
 		public TDocument Upsert { get; set; }
 		public bool? DocAsUpsert { get; set; }
 		public TPartialDocument Doc { get; set; }
+		public bool? DetectNoop { get; set; }
 
 		public Fields Fields
 		{
@@ -75,6 +79,7 @@ public partial class UpdateDescriptor<TDocument, TPartialDocument>
 
 		TPartialDocument IUpdateRequest<TDocument, TPartialDocument>.Doc { get; set; }
 
+		bool? IUpdateRequest<TDocument, TPartialDocument>.DetectNoop { get; set; }
 
 		public UpdateDescriptor<TDocument, TPartialDocument> Script(string script) => Assign(a => a.Script = script);
 
@@ -95,7 +100,9 @@ public UpdateDescriptor<TDocument, TPartialDocument> Params(Func<FluentDictionar
 		/// </summary>
 		public UpdateDescriptor<TDocument, TPartialDocument> Doc(TPartialDocument @object) => Assign(a => a.Doc = @object);
 
-		public UpdateDescriptor<TDocument, TPartialDocument> DocAsUpsert(bool? docAsUpsert = true) => Assign(a => a.DocAsUpsert = docAsUpsert);
+		public UpdateDescriptor<TDocument, TPartialDocument> DocAsUpsert(bool docAsUpsert = true) => Assign(a => a.DocAsUpsert = docAsUpsert);
+
+		public UpdateDescriptor<TDocument, TPartialDocument> DetectNoop(bool detectNoop = true) => Assign(a => a.DetectNoop = detectNoop);
 
 		public UpdateDescriptor<TDocument, TPartialDocument> Fields(Fields fields) =>
 			Assign(a => a.RequestParameters.AddQueryString("fields", fields));

src/Tests/Document/Single/Update/UpdateApiTests.cs

@@ -37,19 +37,22 @@ protected override LazyResponses ClientUsage() => Calls(
 		protected override object ExpectJson { get; } = new
 		{
 			doc = Project.InstanceAnonymous,
-			doc_as_upsert = true
+			doc_as_upsert = true,
+			detect_noop = true
 		};
 
 		protected override UpdateDescriptor<Project, Project> NewDescriptor() => new UpdateDescriptor<Project, Project>(DocumentPath<Project>.Id(CallIsolatedValue));
 
-		protected override Func<UpdateDescriptor<Project,Project>, IUpdateRequest<Project, Project>> Fluent => d=>d
-			.Doc(Project.Instance)
-			.DocAsUpsert();
+		protected override Func<UpdateDescriptor<Project, Project>, IUpdateRequest<Project, Project>> Fluent => d => d
+			 .Doc(Project.Instance)
+			 .DocAsUpsert()
+			 .DetectNoop();
 
 		protected override UpdateRequest<Project, Project> Initializer => new UpdateRequest<Project, Project>(CallIsolatedValue)
 		{
 			Doc = Project.Instance,
-			DocAsUpsert = true
+			DocAsUpsert = true,
+			DetectNoop = true
 		};
 	}
 }