IDEA singleton template

#if (${PACKAGE_NAME} && ${PACKAGE_NAME} != "")package ${PACKAGE_NAME};#end
#parse("File Header.java")
public class ${NAME}{
    private static volatile ${NAME} INSTANCE;

    public static ${NAME} getInstance() {
        if (INSTANCE == null) {
            synchronized (${NAME}.class) {
                if (INSTANCE == null) {
                    INSTANCE = new ${NAME}();
                }
            }
        }
        return INSTANCE;
    }
    
    public static void destroyInstance(){
        INSTANCE = null;
    }

    private ${NAME}() {
    }
}