lcated score is higher than the confidenceThreshold
   */
  static #isProbablyASignUpForm(formElement) {
    let score = FormScenarios.#cachedSignUpFormScore.get(formElement);
    if (!score) {
      let timerId = Glean.pwmgr.signupFormDetection.start();
      try {
        const { rules, type } = SignUpFormRuleset;
        const results = rules.against(formElement);
        score = results.get(formElement).scoreFor(type);
        Glean.pwmgr.signupFormDetection.stopAndAccumulate(timerId);
        timerId = null;
      } finally {
        if (timerId) {
          Glean.pwmgr.signupFormDetection.cancel(timerId);
        }
      }
      FormScenarios.#cachedSignUpFormScore.set(formElement, score);
    }

    const threshold = FormScenarios.signupDetectionConfidenceThreshold;
    return score > threshold;
  }
}
XPCOMUtils.defineLazyPreferenceGetter(
  FormScenarios,
  "signupDetectionConfidenceThreshold",
  "signon.signupDetection.confidenceThreshold",
  "0.75"
);
PK