bleBehavior,
  ],

  properties: {
    disabled: {
      notify: true,
      type: Boolean,
      value: false
    },
    placeholder: { notify: true },
    required: {
      type: Boolean,
      value: false
    },
  },

  observers: [
    'updateSelected(selectedItem)',
    'updateSelected(locusItem)',
  ],

  _getValidity(values) {
    return this.$.textbox.validate(values);
  },

  shouldIgnoreSelectionEvents() {
    if (this.muffleSelection === undefined) this.muffleSelection = false;
    return this.m