RFM95_sendWithRetry. Is this P-persistent CSMA?

[cloolalang]

Im just looking for clarification on
RFM95_sendWithRetry

const uint32_t enterCSMAMS = hwMillis();
		const uint16_t randDelayCSMA = enterMS % 100;
		while (hwMillis() - enterCSMAMS < randDelayCSMA) {
			doYield();

I think these parameters could have an effect on the RF traffic and Time-on-air right?

I would be keep to see the CSMA part explained or if its a particular type:

https://www.tutorialspoint.com/p-persistent-csma-protocol

P