FastLogger extends ExtendedLoggerWrapper { public ExtendedLogger getExtendedLogger() { return super.logger; } FastLogger(final Logger logger);  FastLogger(final ExtendedLogger logger, final String name,
      final MessageFactory messageFactory); static void setDelegating(final boolean newValue); @Override boolean isDebugEnabled(); @Override boolean isDebugEnabled(final Marker marker); @Override boolean isTraceEnabled(); @Override boolean isTraceEnabled(final Marker marker); boolean isDelegating(); ExtendedLogger getExtendedLogger();  }
@Test public void getExtendedLoggerReturnsDelegate() { assertThat(fastLogger.getExtendedLogger()).isSameAs(mockedLogger); }