Method onFinally

deps/undici/undici.js:3031–3040

()

        return this[kHandler].onResponseError?.(controller, error);
      }
      onFinally() {
        if (this.errorHandler) {
          this.body.off("error", this.errorHandler);
          this.errorHandler = null;
        }
        if (this.endHandler) {
          this.body.off("end", this.endHandler);
          this.endHandler = null;
        }
      }
      addHeader(key, value) {
        processHeader(this, key, value);
        return this;