Class ext<ID, T>

Creates an extension node schema. The extension node is a tuple with a sentinel header and a data node. The sentinel header is a 3-byte Uint8Array, which makes this "vec" node to be treated as an extension "ext" node.

The 3-byte header consists of the extension ID, the SID of the tuple ID, and the time of the tuple ID:

• 1 byte for the extension id
• 1 byte for the sid of the tuple id, modulo 256
• 1 byte for the time of the tuple id, modulo 256