presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/SemiTransactionalHiveMetastore.java/SemiTransactionalHiveMetastore/getAllDatabases
class SemiTransactionalHiveMetastore:    public synchronized List<String> getAllDatabases()
    {
        checkReadable();
        return delegate.getAllDatabases();
    }