isListFragment = function(fragment) {
		var firstChild = fragment.firstChild;
		var lastChild = fragment.lastChild;

		// Skip meta since it's likely <meta><ul>..</ul>
		if (firstChild && firstChild.name === 'meta') {
			firstChild = firstChild.next;
		}

		// Skip mce_marker since it's likely <ul>..</ul><span id="mce_marker"></span>
		if (lastChild && lastChild.attr('id') === 'mce_marker') {
			lastChild = lastChild.prev;
		}

		if (!firstChild || firstChild !== lastChild) {
			return false;
		}

		return firstChild.name === 'ul' || firstChild.name === 'ol';
	}
Handles inserts of lists into the editor instance.

@class tinymce.InsertList
@private