code: FileStatusExtended getFileInfoExtended(String src, String leaseHolder)
        throws IOException {
      src = dir.normalizePath(src);
      INode[] inodes = dir.getExistingPathINodes(src);
      return dir.getFileInfoExtended(src, inodes[inodes.length - 1], leaseHolder);
    }
docs: Get the extended file info for a specific file.
  
  @param src
  The string representation of the path to the file
  @return object containing information regarding the file or null if file
  not found
  @throws IOException
  if permission to access file is denied by the system