'bulk_compressed_size()' method of BulkData object spews KeyError on use

[z33kz33k]

Steps to reproduce:

import scrython
bd = scrython.BulkData()
# this works
bd.bulk_name(0)
'Oracle Cards'
# this doesn't
bd.bulk_compressed_size(0, True)  # these are correct args according to help()
Traceback (most recent call last):
  File "/snap/pycharm-community/310/plugins/python-ce/helpers/pydev/pydevconsole.py", line 364, in runcode
    coro = func()
  File "<input>", line 1, in <module>
  File "/home/[...SNIP!...]/venv/lib/python3.10/site-packages/scrython/bulk_data/bulk_data.py", line 153, in bulk_compressed_size
    super(BulkData, self)._checkForTupleKey('data', num, 'compressed_size')
  File "/home/[...SNIP!...]/venv/lib/python3.10/site-packages/scrython/foundation.py", line 73, in _checkForTupleKey
    raise KeyError('This tuple has no key \'{}\''.format(key))
KeyError: "This tuple has no key 'compressed_size'"

I checked every other 'bulk_' method and all of them work without hiccups.