@Override
    public void selectMembers(ObjectPredicate predicate, ObjectOperation operation) {
        super.selectMembers(predicate, operation);
        for (ExpressionNode arg : args) {
            arg.select(predicate, operation);
        }
    }
<p>Perform the appropriate calculation of the arguments into a result node.</p>

@param args   A list of operands.
@param result Place to put the result.
@return True if successful, false if not.
searchlib/src/main/java/com/yahoo/searchlib/expression/MultiArgFunctionNode.java