Generic interface to be used for configuring mock's answer for a two argument invocation.
Answer specifies an action that is executed and a return value that is returned when you interact with the mock.
Example of stubbing a mock with this custom answer:
import static org.mockito.AdditionalAnswers.answer;
when(mock.someMethod(anyString(), anyChar())).then(answer(
new Answer2<String, String, Character>() {
public String answer(String s, Character c) {
return s.replace('f', c);
}
}));
//Following will print "bar"
System.out.println(mock.someMethod("far", 'b'));