code: int clear() {
          vb.clear();
          vd.clear();
          os.clear();
  
          if (vi != null && links != 0) {
              for (int i = 0; i < links; i++) {
                  vi[i].clear();
                  vc[i].clear();
              }
              vi = null;
              vc = null;
          }
          if (dataoffsets != null) {
              dataoffsets = null;
          }
          if (pcmlengths != null) {
              pcmlengths = null;
          }
          if (serialnos != null) {
              serialnos = null;
          }
          if (offsets != null) {
              offsets = null;
          }
          oy.clear();
  
          return (0);
      }
docs: clear out the OggVorbis_File struct