Optional ReadonlyfencingOptional ReadonlymatchReadonlymeteredPre-calculated total metered size in bytes.
ReadonlyrecordsOptional ReadonlystreamStream configuration to apply if the stream is created on append. Unset fields inherit the basin's default stream configuration. Ignored if the stream already exists.
Only used by S2Stream.append; append sessions send it once at connect, see AppendSessionOptions.streamConfig.
Input for append operations. Use
AppendInput.create()to construct with validation.