parameters: (self)
docstring: Returns a list of (FieldDescriptor, value) tuples for all
      fields in the message which are not empty.  A singular field is non-empty
      if HasField() would return true, and a repeated field is non-empty if
      it contains at least one element.  The fields are ordered by field
      number
docstring_summary: Returns a list of (FieldDescriptor, value) tuples for all
      fields in the message which are not empty.  A singular field is non-empty
      if HasField() would return true, and a repeated field is non-empty if
      it contains at least one element.  The fields are ordered by field
      number
docstring_tokens: Returns a list of ( FieldDescriptor value ) tuples for all fields in the message which are not empty . A singular field is non - empty if HasField () would return true and a repeated field is non - empty if it contains at least one element . The fields are ordered by field number
function: def ListFields(self):
      """Returns a list of (FieldDescriptor, value) tuples for all
      fields in the message which are not empty.  A singular field is non-empty
      if HasField() would return true, and a repeated field is non-empty if
      it contains at least one element.  The fields are ordered by field
      number"""
      raise NotImplementedError
function_tokens: def ListFields ( self ) : raise NotImplementedError