question: stub method needed to satisfy java 8 compilers when compiling lambdas . concode_field_sep PlaceHolder placeHolder concode_field_sep CallSite altMetafactory
target: CallSite function ( MethodHandles . Lookup arg0 , String arg1 , MethodType arg2 , MethodType arg3 , MethodHandle arg4 , MethodType arg5 ) { throw new UnsupportedOperationException ( ) ; }