Created field method on datasource in AX Form

with X++ Jobs Created field method on datasource in AX Form

static void Jimmy_CreateFieldMethodOnDataSource(Args _args)
{
    TreeNode        tn1,tnAddr, methodsNode;
    MemberFunction  memberFunction;
    str             source;
    System.Exception clrException;
;
    try
    {
        tn1 = infolog.findNode(
              "\\Forms\\Address\\Data Sources\\Address\\Fields\\AddrRecId");

        tnAddr = infolog.findNode( "\\Forms\\Address" );
        methodsNode = tn1.AOTfindChild( 'Methods' );
        methodsNode.AOTadd('lookup');
        memberFunction = methodsNode.AOTfindChild( 'lookup' );
        source = @"public void lookup(FormControl _formControl, str _filterStr)
    {
        super(_formControl, _filterStr);
    }" ;
        memberFunction.AOTsetSource(source, false);//true is Static method
        memberFunction.AOTsave();
        methodsNode.AOTsave();
        tnAddr.AOTcompile();
    }
    catch( Exception::Error)
    {
        throw exceptionTextFallThrough();
    }
    catch( Exception::CLRError)
    {
        clrException = CLRInterop::getLastException();
        if (clrException != null)
        {
             clrException = clrException.get_InnerException();
            if (clrException != null)
            {
               error(clrException.get_Message());
            }
        }
    }
    info("Created method successful!" + methodsNode.treeNodePath());
}
/*
Thanks for Max Belugin's comments,
it is really good to use Verbatim String as well.
The reason why I use escape characters here is
because this line of code is copied from standard Axapta application :)
*/