message: Dropdown: Describe allowClear, searchEnabled, placeholder
diff: @@ -40,7 +40,7 @@ export class QuestionDropdownModel extends QuestionSelectBase {
  this.placeholder = val;
  }
  /**
  - * The input place holder.
  + * A text displayed in the input field when it doesn't have a value.
  */
  public get placeholder() {
  return this.getLocalizableStringText("placeholder");
  @@ -132,10 +132,13 @@ export class QuestionDropdownModel extends QuestionSelectBase {
  }
  /**
  - * Use it to clear the question value.
  + * Specifies whether to display a button that clears the selected value.
  */
  @property({ defaultValue: false }) allowClear: boolean;
  @property() itemComponent: string;
  + /**
  + * Specifies whether to display a search bar in the drop-down menu.
  + */
  @property({
  defaultValue: true,
  onSet: (newValue: boolean, target: QuestionDropdownModel) => {
  