because the library is built with Java 6 and lacks...

# rx

[jw]

because the library is built with Java 6 and lacks type_use annotations to denote that the generic is non-nullable

[Rok Koncina]

Just curious, why it isn't built with a more modern version?

[alexsullivan114]

Presumably to support Android

[jw]

No, it's more a historical artifact. It's changed to target Java 8 bytecode for the next version but does not have type_use yet