def METHOD_NAME(self):
    """Test parsing only subclasses of a DPT class."""
    assert DPTBase.parse_transcoder("string") == DPTString
    assert DPTNumeric.parse_transcoder("string") is None
    assert DPT2ByteFloat.parse_transcoder("string") is None
    assert DPTBase.parse_transcoder("percent") == DPTScaling
    assert DPTNumeric.parse_transcoder("percent") == DPTScaling
    assert DPT2ByteFloat.parse_transcoder("percent") is None
    assert DPTBase.parse_transcoder("temperature") == DPTTemperature
    assert DPTNumeric.parse_transcoder("temperature") == DPTTemperature
    assert DPT2ByteFloat.parse_transcoder("temperature") == DPTTemperature