question: @ Override public < V > MethodVault < V > newMethod ( Class < ? > type , String methodName , Class < ? > [ ] paramTypes ) { Objects . requireNonNull ( type ) ; MethodVault < V > method = newMethodRec ( type , methodName , paramTypes ) ; if ( method != null ) { return method ; } throw new IllegalStateException ( L . l ( "Unknown method {0}.{1} {2}" , type . getSimpleName ( ) , methodName , Arrays . asList ( paramTypes ) ) ) ; }
target:  Creates a stub method for an abstract method, typically a createXXX method.