code: public java.util.List<com.google.appengine.v1.InboundServiceType> getInboundServicesList() {
      return new com.google.protobuf.Internal.ListAdapter<
          java.lang.Integer, com.google.appengine.v1.InboundServiceType>(inboundServices_, inboundServices_converter_);
    }
docs: <pre>
  Before an application can receive email or XMPP messages, the application
  must be configured to enable the service.
  </pre>
  
  <code>repeated .google.appengine.v1.InboundServiceType inbound_services = 6;</code>