third_party/blink/tools/blinkpy/web_tests/breakpad/dump_reader.py
def _file_extension(self):
        """This routine must be implemented by subclasses.

        Returns the file extension of crash dumps written by breakpad.
        """
        raise NotImplementedError()
This routine must be implemented by subclasses.

        Returns the file extension of crash dumps written by breakpad.
        
This routine must be implemented by subclasses.
Returns the file extension of crash dumps written by breakpad.
This routine must be implemented by subclasses . Returns the file extension of crash dumps written by breakpad .
def _file_extension(self):
        raise NotImplementedError()
def _file_extension ( self ) : raise NotImplementedError ( )
This routine must be implemented by subclasses.
This routine must be implemented by subclasses .
"""This routine must be implemented by subclasses.

        Returns the file extension of crash dumps written by breakpad.
        """
self