* most of the messages also have an identifier which binds it to a specific
* command. Exceptions are among others <code>NodeHello</code>,
* <code>SSKKeypair</code>, and <code>EndListPersistentRequests</code>.
* most of the messages also have an identifier which binds it to a specific
* command. Exceptions are among others <code>NodeHello</code>,
* <code>SSKKeypair</code>, and <code>EndListPersistentRequests</code>.