code: public String getInterceptorDecl()
      {
          Collection<String> names = getInterceptorServiceNames();
          if ( names == null || names.size() == 0 )
              return null;
  
          StringBuffer ret = new StringBuffer("{");
  
          String [] n = names.toArray(new String[0]);
          for (int i=0 ; i < n.length ; ++i)
          {
              ret.append('"'); ret.append( n[i] ); ret.append('"');
              if ( i != n.length-1 )
                  ret.append(", ");
          }
          ret.append( "}" );
  
          return ret.toString();
      }
docs: Returns the names of interceptor service interfaces associated with this operation, formatted as a
  constant initializer string.
  @return the names of the interceptor service interfaces associated with this operation