code: @Override
  	public Collection<HttpMethod> getRequestMethod(Class<?> type, Method method) {
  		return METHODS.computeIfAbsent(key(type, method), __ -> delegate.getRequestMethod(type, method));
  	}
docs: /*
  (non-Javadoc)
  @see org.springframework.hateoas.core.MappingDiscoverer#getRequestMethod(java.lang.Class, java.lang.reflect.Method)