title: How to reference to java class in avro
body: <p>I have ClassA Created in java which has some custom annotation which i can't create a part of the avro record. i would like to define protocol rpc in avro to return the custom java class.</p>
  
  <p>Something like:</p>
  
  <pre><code>@namespace("org.test.avro.service")   protocol TestService {
  org.test.avro.domain.ClassA methodA(); }
  </code></pre>
  
  <p>It says org.apache.avro.compiler.idl.ParseException: Undefined name 'org.test.avro.domain.ClassA'</p>