gistfile1.java

@Reference(type = '?')
public void setLog(LogService log) {
    // ...
}
	
public void unsetLog(LogService log) {
    // ...
}

@Reference(type = '*')
public void addFooListener(IFooListener listener, Map<String, Object> properties) {
    // ...
}

public void unsetFooListener(IFooListener listener) {
    // ...
}