const FILL_PARAMETERS_ALLOWED: &[u64];Expand description
The parameter types draft-21 Section 9.20.16, Table 6 permits inside a
FILL_PARAMETERS value, in ascending order.
TRACK_PROPERTY_FILTER (0x29) is deliberately absent: it selects tracks,
and a fill applies to one already-selected track. The same list is enforced
on the decode side by moqtap_codec::draft21::message::decode_fill_parameters,
which is what the round-trip check at the end of
FillParameters::parameter leans on.