Class evalReturnType( CallStack callstack, Interpreter interpreter )
        throws EvalError
    {
        insureNodesParsed();
        if ( returnTypeNode != null )
            return returnTypeNode.evalReturnType( callstack, interpreter );
        else
            return null;
    }
Class evalReturnType ( CallStack callstack , Interpreter interpreter ) throws EvalError { insureNodesParsed ( ) ; if ( returnTypeNode != null ) return returnTypeNode . evalReturnType ( callstack , interpreter ) ; else return null ; }
Evaluate the return type node.
@return the type or null indicating loosely typed return