Specify source for javadoc (#2895)
Specify source for javadoc (#2895)


adriancole/zipkin,adriancole/zipkin,twitter/zipkin,twitter/zipkin,openzipkin/zipkin,adriancole/zipkin,openzipkin/zipkin,adriancole/zipkin,twitter/zipkin,openzipkin/zipkin,openzipkin/zipkin,openzipkin/zipkin,twitter/zipkin