ReactorRetryAspectExt implements RetryAspectExt { @Override public boolean canHandleReturnType(Class returnType) { return (Flux.class.isAssignableFrom(returnType)) || (Mono.class .isAssignableFrom(returnType)); }  @Override boolean canHandleReturnType(Class returnType); @Override Object handle(ProceedingJoinPoint proceedingJoinPoint,
        io.github.resilience4j.retry.Retry retry, String methodName);  }
@Test public void testCheckTypes() { assertThat(reactorRetryAspectExt.canHandleReturnType(Mono.class)).isTrue(); assertThat(reactorRetryAspectExt.canHandleReturnType(Flux.class)).isTrue(); }