Filter::irreversible should never be null.
According to https://docs.joinmastodon.org/api/entities/#filter, irreversible is not nullable. But https://pleroma.example.com/api/v1/filters returns filters with irreversible set to null.
According to https://docs.joinmastodon.org/api/entities/#filter, irreversible is not nullable. But https://pleroma.example.com/api/v1/filters returns filters with irreversible set to null.