TableMetadata.asCQLQuery does not add table option 'memtable_flush_period_in_ms' in the generated query

When I try to get meta data of a following table, I found that 'memtable_flush_period_in_ms' table property was missing.

CREATE TABLE keyspace3.users_category2 (
    category text,
    points int,
    id uuid,
    PRIMARY KEY (category, points)
) WITH COMPACT STORAGE
AND memtable_flush_period_in_ms = 10000
AND CLUSTERING ORDER BY (points DESC)