get repeat() {
		return this._repeat;
	}
Define if and how an Image Layer should be repeated.<br>
By default, an Image Layer is repeated both vertically and horizontally.<br>
Acceptable values : <br>
- 'repeat' - The background image will be repeated both vertically and horizontally <br>
- 'repeat-x' - The background image will be repeated only horizontally.<br>
- 'repeat-y' - The background image will be repeated only vertically.<br>
- 'no-repeat' - The background-image will not be repeated.<br>
@type {string}
@default 'repeat'