T5011073.java:15:9: compiler.err.cant.apply.symbol: kindname.method, f, java.util.Set,java.lang.Class, java.util.Set,java.lang.Class, kindname.class, T5011073, (compiler.misc.no.conforming.assignment.exists: (compiler.misc.inconvertible.types: java.util.Set, java.util.Set)) 1 error