public Builder addResearchedTechs(
          org.bwapi.proxy.messages.GameMessages.TechType.Builder builderForValue) {
        if (researchedTechsBuilder_ == null) {
          ensureResearchedTechsIsMutable();
          researchedTechs_.add(builderForValue.build());
          onChanged();
        } else {
          researchedTechsBuilder_.addMessage(builderForValue.build());
        }
        return this;
      }