code: function (question, defaultValue) {
    // For simplicity we uncheck all boxes and
    // use .default to set the active ones.
    _.each(question.choices, function (choice) {
      if (typeof choice === 'object') {
        choice.checked = false;
      }
    });
  
    return defaultValue;
  }
docs: Returns the default value for a checkbox.
  
  @param  {Object} question Inquirer prompt item
  @param  {*} defaultValue  The stored default value
  @return {*}               Default value to set
  @private