docs: public Participant getParticipant(ParticipantIdentity participantIdentity) {
  		if (participants != null) {
  			for (Participant participant: participants) {
  				if (participant.getParticipantId() == participantIdentity.getParticipantId()) {
  					return participant;
  				}
  			}
  		}
  		
  		return null;
  	}