Yeah, as Joker_vD said you need _some_ common ground as to where you get your methods from. I dream about "implicit" interfaces in Java like in Go. So everythi

Yeah, as Joker_vD said you need _some_ common ground as to where you get your methods from. I dream about "implicit" interfaces in Java like in Go. So everything that has "flatMap" would implicitly implement "FlatMappable" or something like that.