void userDataChanged(String propertyName, Address codeUnitAddr, Object oldValue,
			Object newValue) {
		// Do not update change set!
		fireEvent(new CodeUnitUserDataChangeRecord(propertyName, codeUnitAddr, oldValue, newValue));
	}
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