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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _close_widget(widget):
 """ Closes the given widgets and handles cases where the widget has been clone or is a clone of another widget """

        if widget is None:
            return
        try:
            widget.document().setParent(None)
            widget.syntax_highlighter.setParent(None)
        except AttributeError:
            pass  # not a QPlainTextEdit subclass
        # handled cloned widgets
        clones = []
        if hasattr(widget, 'original') and widget.original:
            # cloned widget needs to be removed from the original
            widget.original.clones.remove(widget)
            try:
                widget.setDocument(None)
            except AttributeError:
                # not a QTextEdit/QPlainTextEdit
                pass
        elif hasattr(widget, 'clones'):
            clones = widget.clones
        try:
            # only clear current editor if it does not have any other clones
            widget.close(clear=len(clones) == 0)
        except (AttributeError, TypeError):
            # not a CodeEdit
            widget.close()
        return clones