def setBreak(self, breakFlag=True):
        """Method to invoke the Python pdb debugger when this element is
           about to be parsed. Set ``breakFlag`` to True to enable, False to
           disable.
        """
        if breakFlag:
            _parseMethod = self._parse
            def breaker(instring, loc, doActions=True, callPreParse=True):
                import pdb
                # this call to pdb.set_trace() is intentional, not a checkin error
                pdb.set_trace()
                return _parseMethod(instring, loc, doActions, callPreParse)
            breaker._originalParseMethod = _parseMethod
            self._parse = breaker
        else:
            if hasattr(self._parse, "_originalParseMethod"):
                self._parse = self._parse._originalParseMethod
        return self
Method to invoke the Python pdb debugger when this element is
           about to be parsed. Set ``breakFlag`` to True to enable, False to
           disable.
        
product/gradle-plugin/src/main/python/pip/_vendor/pyparsing.py