def schema_key(s_id: str) -> SchemaKey:
s_key = s_id.split('<STR_LIT::>')<EOL>s_key.pop(<NUM_LIT:1>)  <EOL>return SchemaKey(*s_key)<EOL>
Return schema key (namedtuple) convenience for schema identifier components.

:param s_id: schema identifier
:return: schema key (namedtuple) object