<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def tableinfo(tableid, lang=DEFAULT_LANGUAGE):
 """Fetch metadata for statbank table Metadata includes information about variables, which can be used when extracting data. """

    request = Request('tableinfo', tableid, lang=lang)

    return Tableinfo(request.json, lang=lang)