public Builder addAllRequiredUnits(
          java.lang.Iterable<? extends org.bwapi.proxy.messages.GameMessages.UnitTypeIntPair> values) {
        if (requiredUnitsBuilder_ == null) {
          ensureRequiredUnitsIsMutable();
          super.addAll(values, requiredUnits_);
          onChanged();
        } else {
          requiredUnitsBuilder_.addAllMessages(values);
        }
        return this;
      }