Do not create operations without group info in client (#1233)

powershell/resources/templates/azureServiceClient.ejs

@@ -28,7 +28,7 @@ namespace <%- project.namespace %>
         /// </summary>
         private void Initialize()
         {
-<% project.model.operationGroups.forEach(function(methodGroup){ -%>
+<% project.model.operationGroups.filter(methodGroup => methodGroup.$key != '').forEach(function(methodGroup){ -%>
 <% var key = methodGroup.$key == 'Operations' ? '' : methodGroup.$key-%>
             this.<%- project.helper.PascalCase(methodGroup.$key) %> = new <%- project.helper.PascalCase(key) %>Operations(this);
 <% }); -%>

powershell/resources/templates/serviceClientBody.ejs

@@ -23,7 +23,7 @@
         public <%- type %> <%- parameter.language.default.name%> { get; set;}
 <% }%>
 <%});-%>
-<% project.model.operationGroups.forEach(function(methodGroup){ -%>
+<% project.model.operationGroups.filter(methodGroup => methodGroup.$key != '').forEach(function(methodGroup){ -%>
 <% var key = methodGroup.$key == 'Operations' ? '' : methodGroup.$key-%>
         /// <summary>
         /// Gets the I<%- project.helper.PascalCase(key) %>Operations

powershell/resources/templates/serviceClientInterface.ejs

@@ -42,7 +42,7 @@ namespace <%- project.namespace %>
 <% }%>
 
 <% }); -%>
-<% project.model.operationGroups.forEach(function(methodGroup){ -%>
+<% project.model.operationGroups.filter(methodGroup => methodGroup.$key != '').forEach(function(methodGroup){ -%>
 <% var key = methodGroup.$key == 'Operations' ? '' : methodGroup.$key-%>
         /// <summary>
         /// Gets the I<%- project.helper.PascalCase(key) %>Operations