code: public void setDirectChildrenLoaded(Supplier<JournalContext> context, InodeDirectory dir) {
      mState.applyAndJournal(context, UpdateInodeDirectoryEntry.newBuilder()
          .setId(dir.getId())
          .setDirectChildrenLoaded(true)
          .build());
    }
docs: Marks an inode directory as having its direct children loaded.
  
  @param context journal context supplier
  @param dir the inode directory