function TouchInput() {
    classCallCheck(this, TouchInput);

    TouchInput.prototype.evTarget = TOUCH_TARGET_EVENTS;
    TouchInput.prototype.targetIds = {};

    var _this = possibleConstructorReturn(this, (TouchInput.__proto__ || Object.getPrototypeOf(TouchInput)).apply(this, arguments));

    _this.evTarget = TOUCH_TARGET_EVENTS;
    _this.targetIds = {};
    return _this;
  }
@private
Multi-user touch events input
@constructor
@extends Input