parameters: (self)
docstring: Should be overridden by classes which inherit this class.
docstring_summary: Should be overridden by classes which inherit this class.
docstring_tokens: Should be overridden by classes which inherit this class .
function: def migrate(self):
          """
          Should be overridden by classes which inherit this class.
          """
  
          pass
function_tokens: def migrate ( self ) : pass