How to use the pytsk3.TSK_FS_META_TYPE_BLK function in pytsk3

pytsk3.TSK_FS_NAME_TYPE_DIR: "d",
    pytsk3.TSK_FS_NAME_TYPE_BLK: "b",
    pytsk3.TSK_FS_NAME_TYPE_REG: "r",
    pytsk3.TSK_FS_NAME_TYPE_LNK: "l",
    pytsk3.TSK_FS_NAME_TYPE_SOCK: "h",
    pytsk3.TSK_FS_NAME_TYPE_SHAD: "s",
    pytsk3.TSK_FS_NAME_TYPE_WHT: "w",
    pytsk3.TSK_FS_NAME_TYPE_VIRT: "v"
}

META_TYPE_LOOKUP = {
    pytsk3.TSK_FS_META_TYPE_REG: "r",
    pytsk3.TSK_FS_META_TYPE_DIR: "d",
    pytsk3.TSK_FS_META_TYPE_FIFO: "p",
    pytsk3.TSK_FS_META_TYPE_CHR: "c",
    pytsk3.TSK_FS_META_TYPE_BLK: "b",
    pytsk3.TSK_FS_META_TYPE_LNK: "h",
    pytsk3.TSK_FS_META_TYPE_SHAD: "s",
    pytsk3.TSK_FS_META_TYPE_SOCK: "s",
    pytsk3.TSK_FS_META_TYPE_WHT: "w",
    pytsk3.TSK_FS_META_TYPE_VIRT: "v"
}

ATTRIBUTE_TYPES_TO_PRINT = [
    pytsk3.TSK_FS_ATTR_TYPE_NTFS_IDXROOT,
    pytsk3.TSK_FS_ATTR_TYPE_NTFS_DATA,
    pytsk3.TSK_FS_ATTR_TYPE_DEFAULT]


class TSKListDirectoryAction(files.ListDirectoryAction):
    """List Directory via TSK."""
    schema = [

auto_register = True

  # A mapping to encode TSK types to a stat.st_mode
  FILE_TYPE_LOOKUP = {
      pytsk3.TSK_FS_NAME_TYPE_UNDEF: 0,
      pytsk3.TSK_FS_NAME_TYPE_FIFO: stat.S_IFIFO,
      pytsk3.TSK_FS_NAME_TYPE_CHR: stat.S_IFCHR,
      pytsk3.TSK_FS_NAME_TYPE_DIR: stat.S_IFDIR,
      pytsk3.TSK_FS_NAME_TYPE_BLK: stat.S_IFBLK,
      pytsk3.TSK_FS_NAME_TYPE_REG: stat.S_IFREG,
      pytsk3.TSK_FS_NAME_TYPE_LNK: stat.S_IFLNK,
      pytsk3.TSK_FS_NAME_TYPE_SOCK: stat.S_IFSOCK,
  }

  META_TYPE_LOOKUP = {
      pytsk3.TSK_FS_META_TYPE_BLK: 0,
      pytsk3.TSK_FS_META_TYPE_CHR: stat.S_IFCHR,
      pytsk3.TSK_FS_META_TYPE_DIR: stat.S_IFDIR,
      pytsk3.TSK_FS_META_TYPE_FIFO: stat.S_IFIFO,
      pytsk3.TSK_FS_META_TYPE_LNK: stat.S_IFLNK,
      pytsk3.TSK_FS_META_TYPE_REG: stat.S_IFREG,
      pytsk3.TSK_FS_META_TYPE_SOCK: stat.S_IFSOCK,
  }

  # Files we won't return in directories.
  BLACKLIST_FILES = [
      "$OrphanFiles"  # Special TSK dir that invokes processing.
  ]

  # The file like object we read our image from
  tsk_raw_device = None

def make_stat(meta):
    """ Return a stat structure from TSK metadata struct """
    meta_type_dispatcher = {
        pytsk3.TSK_FS_META_TYPE_DIR: stat.S_IFDIR,
        pytsk3.TSK_FS_META_TYPE_REG: stat.S_IFREG,
        pytsk3.TSK_FS_META_TYPE_FIFO: stat.S_IFIFO,
        pytsk3.TSK_FS_META_TYPE_CHR: stat.S_IFCHR,
        pytsk3.TSK_FS_META_TYPE_LNK: stat.S_IFLNK,
        pytsk3.TSK_FS_META_TYPE_BLK: stat.S_IFBLK,
        }

    s = fuse.Stat()
    s.st_ino = meta.addr
    s.st_dev = 0
    s.st_nlink = meta.nlink
    s.st_uid = meta.uid
    s.st_gid = meta.gid
    s.st_size = meta.size
    s.st_atime = meta.atime
    s.st_mtime = meta.mtime
    s.st_ctime = meta.crtime
    s.st_blocks = 2
    s.st_rdev = 0
    s.st_mode = meta_type_dispatcher.get(int(meta.type), 0)
    s.st_mode |= int(meta.mode)