public void remove(int index, int len) {
    	checkRange(index, len);

    	doRemoveAll(index, len);
	}
Remove specified range of elements from list.

@param index	index of first element to remove
@param len	number of elements to remove
@throws 		IndexOutOfBoundsException if the range is invalid
jphp-runtime/src/php/runtime/memory/support/IList.java