code: public final <T extends Freezable> T getFreezable() {
      touch();
      Freezable pojo = _pojo;     // Read once!
      if( pojo != null ) return (T)pojo;
      pojo = TypeMap.newFreezable(_type);
      pojo.reloadFromBytes(memOrLoad());
      return (T)(_pojo = pojo);
    }
docs: The FAST path get-POJO as a {@link Freezable} - final method for speed.
  Will (re)build the POJO from the _mem array.  Never returns NULL.
  @return The POJO, probably the cached instance.