private void updateChangeSet(Address start, Address end) {
		ProgramDBChangeSet pcs = (ProgramDBChangeSet) changeSet;
		if (start != null) {
			pcs.addRange(start, end != null ? end : start);
		}
		else if (end != null) {
			pcs.addRange(end, end);
		}
	}
Notification that a symbol was added.
@param symbol the symbol that was added.
@param eventType the type of change
@param addr the address of the symbol that added
@param oldValue old value depends on the type of the change
@param newValue old value depends on the type of the change
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/ProgramDB.java