public void process() {
   for (TypeDeclaration typeDecl : env.getSpecifiedTypeDeclarations()) {
     ExtractInterface annot = typeDecl.getAnnotation(ExtractInterface.class);
     if (annot == null) break;
     for (MethodDeclaration m : typeDecl.getMethods())
       if (m.getModifiers().contains(Modifier.PUBLIC)
           && !(m.getModifiers().contains(Modifier.STATIC))) interfaceMethods.add(m);
     if (interfaceMethods.size() > 0) {
       try {
         PrintWriter writer = env.getFiler().createSourceFile(annot.value());
         writer.println("package " + typeDecl.getPackage().getQualifiedName() + ";");
         writer.println("public interface " + annot.value() + " {");
         for (MethodDeclaration m : interfaceMethods) {
           writer.print("  public ");
           writer.print(m.getReturnType() + " ");
           writer.print(m.getSimpleName() + " (");
           int i = 0;
           for (ParameterDeclaration parm : m.getParameters()) {
             writer.print(parm.getType() + " " + parm.getSimpleName());
             if (++i < m.getParameters().size()) writer.print(", ");
           }
           writer.println(");");
         }
         writer.println("}");
         writer.close();
       } catch (IOException ioe) {
         throw new RuntimeException(ioe);
       }
     }
   }
 }