/**
  * Returns file descriptor or null if not yet open/already closed
  *
  * @return fd or null
  */
 @DSSource({DSSourceKind.NETWORK})
 @DSGenerator(
     tool_name = "Doppelganger",
     tool_version = "2.0",
     generated_on = "2013-12-30 12:36:07.247 -0500",
     hash_original_method = "48E5039C4FB2B8BAB81B3561EAA65E0E",
     hash_generated_method = "0FA483774DCFD89C5E0A6792E5C45D30")
 public FileDescriptor getFileDescriptor() {
   return impl.getFileDescriptor();
 }