public Builder addLarvae(org.bwapi.proxy.messages.GameMessages.UnitId value) {
        if (larvaeBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          ensureLarvaeIsMutable();
          larvae_.add(value);
          onChanged();
        } else {
          larvaeBuilder_.addMessage(value);
        }
        return this;
      }