Entry = function (val) {
	        /**
	         * @type {}
	         */
	        this.value = val;

	        /**
	         * @type {module:zrender/core/LRU~Entry}
	         */
	        this.next;

	        /**
	         * @type {module:zrender/core/LRU~Entry}
	         */
	        this.prev;
	    }
@param  {string} key
@param  {} value
@return {} Removed value