code: public Middleware init(@NotNull final Yoke yoke, @NotNull final String mount) {
  
          if (initialized) {
              throw new RuntimeException("Already Initialized!");
          }
  
          this.yoke = yoke;
          this.mount = mount;
          this.initialized = true;
  
          return this;
      }
docs: Initializes the middleware. This methos is called from Yoke once a middleware is added to the chain.
  
  @param yoke the local Yoke instance.
  @param mount the configured mount path.
  @return self