counterpartyMarker property
The app's opaque marker for the counterparty of this channel (bead libspiffy-bps1, spv-understanding.md "Core Data Management" requirement 5), journaled with the request or the acceptance.
It is what the channel stamps on the wallet transactions it records. Null means the app supplied none, and the recording falls back to the counterparty's peer id. Kept apart from context, which is address-derivation and labelling metadata.
Implementation
final String? counterpartyMarker;