docs: function(cell)
  	{
  		var result = '';
  		
  		if (cell != null)
  		{
  			var parent = cell.getParent();
  			
  			while (parent != null)
  			{
  				var index = parent.getIndex(cell);
  				result = index + mxCellPath.PATH_SEPARATOR + result;
  				
  				cell = parent;
  				parent = cell.getParent();
  			}
  		}
  		
  		// Removes trailing separator
  		var n = result.length;
  		
  		if (n > 1)
  		{
  			result = result.substring(0, n - 1);
  		}
  		
  		return result;
  	}