pub const DURATION_BEST_AVAILABLE_MS: u32 = _; // 4_294_967_294u32Expand description
Issue 1973 — the “best available” spelling for deadline_ms and
liveliness_lease_ms: resolve at creation against the discovered graph.
Upstream spells it RMW_QOS_DEADLINE_BEST_AVAILABLE /
RMW_QOS_LIVELINESS_LEASE_DURATION_BEST_AVAILABLE, both
RMW_DURATION_INFINITE - 1; this is the same idea in our u32-millisecond
fields: DURATION_INFINITE_MS minus one. A REQUEST only — the runtime
replaces it before a backend sees the profile
(QoSProfile::resolve_best_available). Mirrors the C header’s
NROS_RMW_DURATION_BEST_AVAILABLE_MS. Not meaningful for lifespan_ms,
as upstream defines no best-available lifespan.