Currently, if the mappings are completed for an interface and that interface is used to create a lambda, the parameters of that lambda do not inherit the names from the interface.
Some examples in the source, in ExecuteCommand, the field CALLBACK_CHAINER's inner lambda does not have the correct parameter mappings which are set for ResultConsumer. Also in FillBiomeCommand#makeResolver, the returned lambda for BiomeResolver does not inherit parameter names from the interface.