public Builder addAllRegions(
          java.lang.Iterable<? extends org.bwapi.proxy.messages.TerrainMessages.Region> values) {
        if (regionsBuilder_ == null) {
          ensureRegionsIsMutable();
          super.addAll(values, regions_);
          onChanged();
        } else {
          regionsBuilder_.addAllMessages(values);
        }
        return this;
      }