parameters: (self, flag_values)
docstring: Verify that constraint is satisfied.
  
      flags library calls this method to verify Validator's constraint.
      Args:
        flag_values: gflags.FlagValues, containing all flags
      Raises:
        Error: if constraint is not satisfied.
docstring_summary: Verify that constraint is satisfied.
docstring_tokens: Verify that constraint is satisfied .
function: def Verify(self, flag_values):
      """Verify that constraint is satisfied.
  
      flags library calls this method to verify Validator's constraint.
      Args:
        flag_values: gflags.FlagValues, containing all flags
      Raises:
        Error: if constraint is not satisfied.
      """
      param = self._GetInputToCheckerFunction(flag_values)
      if not self.checker(param):
        raise Error(self.message)
function_tokens: def Verify ( self , flag_values ) : param = self . _GetInputToCheckerFunction ( flag_values ) if not self . checker ( param ) : raise Error ( self . message )