.hideKeyboard() 編集を提案

                    .appium.hideKeyboard([callback])
                

module.exports = {
  'hide device soft keyboard': function (app) {
    app
      .appium.hideKeyboard();
  },

  'hide device soft keyboard with ES6 async/await': async function (app) {
    await app.appium.hideKeyboard();
  }
};