add async function syntax

src/async-functions/syntax/async-class-decl-private-method.template

+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+path: language/statements/class/async-private-method-
+name: Async private method as a ClassDeclaration element
+esid: prod-AsyncMethod
+info: |
+  ClassElement :
+    PrivateMethodDefinition
+
+  MethodDefinition :
+    AsyncMethod
+
+  Async Function Definitions
+
+  AsyncMethod :
+    async [no LineTerminator here] # PropertyName ( UniqueFormalParameters ) { AsyncFunctionBody }
+features: [async-functions, class-methods-private]
+---*/
+
+class C { async #method() {
+    /*{ body }*/
+}}

src/async-functions/syntax/async-class-decl-static-private-method.template

+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+path: language/statements/class/async-private-method-static-
+name: Static async private method as a ClassDeclaration element
+esid: prod-AsyncMethod
+info: |
+  ClassElement :
+    static PrivateMethodDefinition
+
+  MethodDefinition :
+    AsyncMethod
+
+  Async Function Definitions
+
+  AsyncMethod :
+    async [no LineTerminator here] # PropertyName ( UniqueFormalParameters ) { AsyncFunctionBody }
+features: [async-functions, class-methods-private]
+---*/
+
+class C { static async #method() {
+    /*{ body }*/
+}}

src/async-functions/syntax/async-class-expr-private-method.template

+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+path: language/expressions/class/async-private-method-
+name: Async private method as a ClassExpression element
+esid: prod-AsyncMethod
+info: |
+  ClassElement :
+    PrivateMethodDefinition
+
+  MethodDefinition :
+    AsyncMethod
+
+  Async Function Definitions
+
+  AsyncMethod :
+    async [no LineTerminator here] # PropertyName ( UniqueFormalParameters ) { AsyncFunctionBody }
+features: [async-functions, class-methods-private]
+---*/
+
+var C = class { async #method() {
+    /*{ body }*/
+}};

src/async-functions/syntax/async-class-expr-static-private-method.template

+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+path: language/expressions/class/async-private-method-static-
+name: Static private async method as a ClassExpression element
+esid: prod-AsyncMethod
+info: |
+  ClassElement :
+    static PrivateMethodDefinition
+
+  MethodDefinition :
+    AsyncMethod
+
+  Async Function Definitions
+
+  AsyncMethod :
+    async [no LineTerminator here] # PropertyName ( UniqueFormalParameters ) { AsyncFunctionBody }
+features: [async-functions, class-methods-private]
+---*/
+
+var C = class { static async #method() {
+    /*{ body }*/
+}};

src/async-generators/default/async-class-decl-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberb LP. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---

src/async-generators/default/async-class-decl-static-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---

src/async-generators/default/async-class-expr-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---

src/async-generators/default/async-class-expr-static-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberg L. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---

src/generators/default/class-decl-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
 path: language/statements/class/gen-method-

src/generators/default/class-decl-static-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
 path: language/statements/class/gen-private-method-static-

src/generators/default/class-expr-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
 path: language/expressions/class/gen-private-method-

src/generators/default/class-expr-static-private-method.template

-// Copyright (C) 2018 Jaideep Bhoosreddy. All rights reserved.
+// Copyright (C) 2018 Bloomberg LP. All rights reserved.
 // This code is governed by the BSD license found in the LICENSE file.
 /*---
 path: language/expressions/class/gen-private-method-static-