successSteps = (data) => {
    try {
      promise.resolve(convertBytesToJSValue(data))
    } catch (e) {
      errorSteps(e)
    }
  }
@see https://fetch.spec.whatwg.org/#concept-body-consume-body
@param {any} object internal state
@param {(value: unknown) => unknown} convertBytesToJSValue
@param {any} instance
@param {(target: any) => any} getInternalState