beginUse
Pins a complete initialized generation before any callback or intermediate native flush can release its cache.
Multiple read-only uses may share unchanged pixels; initialization or in-place uploads after sealing are forbidden. Each successful call must be paired with endUse in a finally block.
Parameters
set
complete live generation whose immutable layer handles were captured before GUI presentation.
Throws
for incomplete, retired, quarantined, foreign, expired, terminal, or off-thread access.