public Builder addHoles(
          org.bwapi.proxy.messages.TerrainMessages.Polygon.Builder builderForValue) {
        if (holesBuilder_ == null) {
          ensureHolesIsMutable();
          holes_.add(builderForValue.build());
          onChanged();
        } else {
          holesBuilder_.addMessage(builderForValue.build());
        }
        return this;
      }