public boolean hasPrevious() {
		boolean hasPrevious = historyIndex > 0;
		return hasPrevious;
	}
Returns true if this history list's current item pointer is not at the beginning of the list.

@return true if this history list's current item pointer is not at the beginning of the list.
Ghidra/Framework/Generic/src/main/java/util/HistoryList.java