Returns the range types of `fluents` following the given `ordering`.

        Returns:
            Sequence[str]: A tuple of range types representing
            the range of each fluent.

def _fluent_range_type(cls, fluents, ordering) -> Sequence[str]:
        '''Returns the range types of `fluents` following the given `ordering`.

        Returns:
            Sequence[str]: A tuple of range types representing
            the range of each fluent.
        '''
        range_types = []
        for name in ordering:
            fluent = fluents[name]
            range_type = fluent.range
            range_types.append(range_type)
        return tuple(range_types)