code: public static void assertAnswered(String msg, SipCall call) {
      assertNotNull("Null assert object passed in", call);
      assertTrue(msg, call.isCallAnswered());
    }
docs: Asserts that the given incoming or outgoing call leg was answered. Assertion failure output
  includes the given message text.
  
  @param msg message text to output if the assertion fails.
  @param call The incoming or outgoing call leg.