Returns all lines that represent the fields of the layer (both their names and values).

def _get_all_field_lines(self):
        """
        Returns all lines that represent the fields of the layer (both their names and values).
        """
        for field in self._get_all_fields_with_alternates():
            # Change to yield from
            for line in self._get_field_or_layer_repr(field):
                yield line