public CsdlSemanticsCollectionTypeExpression(CsdlExpressionTypeReference expressionUsage, CsdlSemanticsTypeDefinition type)
     : base(expressionUsage, type)
 {
 }
 protected CsdlSemanticsTypeExpression(CsdlExpressionTypeReference expressionUsage, CsdlSemanticsTypeDefinition type)
     : base(expressionUsage)
 {
     this.expressionUsage = expressionUsage;
     this.type = type;
 }