//public static O2MethodStream map_MemberReferenceExpressions(this O2MethodStream o2MethodStream, MethodDeclaration methodDeclaration)
        public static O2MethodStream map_MemberReferenceExpressions(this O2MethodStream o2MethodStream, INode methodDeclaration)
        {
            var memberReferenceExpressions = methodDeclaration.iNodes <INode, MemberReferenceExpression>();

            foreach (var memberReferenceExpression in memberReferenceExpressions)
            {
                var calledIMethod = o2MethodStream.O2MappedAstData.iMethod(memberReferenceExpression);
                if (calledIMethod != null)
                {
                    if (o2MethodStream.O2MappedAstData.has_IMethod(calledIMethod))
                    {
                        o2MethodStream.add_IMethod(calledIMethod);
                    }
                    else
                    {
                        o2MethodStream.add_ExternalIMethod(calledIMethod);
                    }
                }
                else
                {
                    o2MethodStream.map_Expression(memberReferenceExpression);
                }
                //else
                //    "Could not resolve iMethod for memberReferenceExpression".error();
            }
            return(o2MethodStream);
        }