reactor-core/src/main/java/reactor/core/publisher/RingBuffer.java
long getMinimumSequence(@Nullable RingBuffer.Sequence excludeSequence) {
		return RingBuffer.getMinimumSequence(excludeSequence, gatingSequences, cursor.getAsLong());
	}
long getMinimumSequence(@Nullable RingBuffer.Sequence excludeSequence) {
		return RingBuffer.getMinimumSequence(excludeSequence, gatingSequences, cursor.getAsLong());
	}
Get the minimum sequence value from all of the gating sequences
added to this ringBuffer.

@param excludeSequence to exclude from search
@return The minimum gating sequence or the cursor sequence if
no sequences have been added.