Revision control
++ <?xml version="1.0" encoding="UTF-8"?>
++ <scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0" binding="early" xmlns:qt="http://www.qt.io/2015/02/scxml-ext" datamodel="ecmascript" name="NestedInvoker" qt:editorversion="15.0.1" initial="Start">
++ <state id="Start">
++ <invoke src="nestederror.scxml">
++ </invoke>
++ </state>
++ </scxml>