Axis2 WSDL attachment example

[Nan Null]

I have created a web service that is running.  The client and server
codes are generated from a WSDL.  Now, I need to add a method for
upload and downloading binary files.  What is the WSDL snippet that
can generate the stub for the client and server code for this?  Is
there an example for this?  I check the sample file, and it's hand
roll code, versus generated code.