1   package ch.qos.logback.classic;
2   
3   import java.io.Serializable;
4   
5   class Foo implements Serializable {
6     private static final long serialVersionUID = 1L;
7     final Logger logger;
8     
9     Foo(Logger logger) {
10      this.logger = logger;
11    }
12    
13    void doFoo() {
14      logger.debug("hello");
15    }
16  }
17