Lock Schema Statistics

When i lock a gather schema statistics with "dbms_stats.lock_schema_stats"... where or how can i see that the schema is locked (and not that the tables are locked, that is done by the sql below)?

This is for tables:

select owner, table_name, stattype_locked

from dba_tab_statistics

where stattype_locked is not null;

What about Schema? How can i know that was because a schema lock and not because a table lock?