public Category<?> C.category()
public Category<scala.Tuple2> C.category1()
public default Category<java.lang.Object> M1.category()
public default Category<scala.Tuple2> M1.category1()
public static Category M1.category$(M1)
public static Category M1.category1$(M1)
public default Category<java.lang.Object> M2.category()
public default Category<scala.Tuple2> M2.category1()
public static Category M2.category$(M2)
public static Category M2.category1$(M2)