- /**
- * Attaches field copy behavior from input fields to other input fields.
- *
- * When a field is filled out, apply its value to other fields that will
- * likely use the same value. In the installer this is used to populate the
- * administrator email address with the same value as the site email address.
- *
- * @type {Drupal~behavior}
- *
- * @prop {Drupal~behaviorAttach} attach
- * Attaches the field copy behavior to an input field.
- */