write
Writes a group. If the archive does not exist, it is created first. If a group with the same ID already exists, it is overwritten.
This method consumes the readable portion of the given ByteBuf. It does not modify the ByteBuf's reference count.
Parameters
archive
the archive ID.
group
the group ID.
buf
the new contents of the group.
Throws
if the archive or group ID is out of bounds, or if buf is too long (see MAX_GROUP_SIZE).
if the store is full.
IOException
if an underlying I/O error occurs.