_createTextProperties(obj) {
    const predefinedKeys = [
      'text',
      'fontFamily',
      'fontSize',
      'fontStyle',
      'textAlign',
      'textDecoration',
      'fontWeight',
    ];
    const props = {};
    extend(props, getProperties(obj, predefinedKeys));

    return props;
  }
Get text object's properties
@param {fabric.Object} obj - fabric text object
@param {Object} props - properties
@returns {Object} properties object