What is the right way to add classpath?

[bupt_ljy]

Hi,all
 My program needs some dependencies before it’s submitted to yarn. Like:
 ```
 stream.filter(new FilterService()).print()
 env.execute()
 ```
 I use external dependency inFilterService, and the program reports 
NoClassDefFoundError at  
 
org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:529)


 Now my solution is changing the bin/flink and add my classpath into it.
 Any better ideas?
 Thanks.


 Best, Jiayi Liao