Currently, the API supports the parameter belief_time_measured_instantly=True when uploading data.
This ensures that the belief_time is set to immediately after the event ends (equivalently, sets belief_horizon = 0).

However, this parameter is undocumented.

Proposal

• Add documentation for the belief_time_measured_instantly parameter in the API docs.
• Clarify when to use it (e.g., when belief_time should coincide with event end).