Checks if DescribeRouteTablesResult property is set
            
 Declaration Syntax
 Declaration Syntax| C# | 
public bool IsSetDescribeRouteTablesResult()
 Return Value
 Return Valuetrue if DescribeRouteTablesResult property is set
 Declaration Syntax
 Declaration Syntax| C# | 
public bool IsSetDescribeRouteTablesResult()
 Return Value
 Return Value