Create a new MultiButton instance.
@memberof MultiButton
@constructs
@param {Object} [props] - A dictionary of properties to initialize a MultiButton instance with.
@static
function create(props) {
    var multiButton = Object.create(this);

    _canvasWidget2.default.create.call(multiButton);

    Object.assign(multiButton, MultiButton.defaults, props);

    if (props.value) {
      multiButton.__value = props.value;
    } else {
      multiButton.__value = [];
      for (var i = 0; i < multiButton.count; i++) {
        multiButton.__value[i] = 0;
      }multiButton.value = [];
    }

    multiButton.active = {};
    multiButton.__prevValue = [];

    multiButton.init();

    return multiButton;
  }