code: public FallbackMethod getFallbackMethod(Class<?> enclosingType, Method commandMethod, boolean extended) {
          if (commandMethod.isAnnotationPresent(HystrixCommand.class)) {
              return FALLBACK_METHOD_FINDER.find(enclosingType, commandMethod, extended);
          }
          return FallbackMethod.ABSENT;
      }
docs: Gets fallback method for command method.
  
  @param enclosingType the enclosing class
  @param commandMethod the command method. in the essence it can be a fallback
  method annotated with HystrixCommand annotation that has a fallback as well.
  @param extended      true if the given commandMethod was derived using additional parameter, otherwise - false
  @return new instance of {@link FallbackMethod} or {@link FallbackMethod#ABSENT} if there is no suitable fallback method for the given command