Method delegate

gson/src/main/java/com/google/gson/Gson.java:1226–1237

()

    }

    private TypeAdapter<T> delegate() {
      TypeAdapter<T> delegate = this.delegate;
      if (delegate == null) {
        // Can occur when adapter is leaked to other thread or when adapter is used for
        // (de-)serialization
        // directly within the TypeAdapterFactory which requested it
        throw new IllegalStateException(
            "Adapter for type with cyclic dependency has been used"
                + " before dependency has been resolved");
      }
      return delegate;
    }

    @Override
    public TypeAdapter<T> getSerializationDelegate() {