Method toggle

src/cdk/collections/selection-model.ts:104–106

* Toggles a value between selected and deselected. * @param value The value to toggle * @return Whether the selection changed as a result of this call

(value: T)

   * @return Whether the selection changed as a result of this call
   */
  toggle(value: T): boolean {
    return this.isSelected(value) ? this.deselect(value) : this.select(value);
  }

  /**
   * Clears all of the selected values.