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def hello
  "hello world"
end

send "hello" # => "hello world"

this["methodName"]();

<mx:MenuBar id="myMenuBar" labelField="@label" itemClick="menuHandler(event);">
    <mx:XMLList>
        <menuitem label="Submit" handler="submit"/>
        <menuitem label="Reset" handler="reset"/>
    </mx:XMLList>
</mx:MenuBar>

private function menuHandler(event:MenuEvent):void {
    this[event.item.@handler](event);
}

private function submit(event:MenuEvent):void {
    // do submit logic
}

public function reset(event:MenuEvent):void {
    // do reset logic
}