private com.google.protobuf.SingleFieldBuilder<
          org.bwapi.proxy.messages.TerrainMessages.DynamicTerrainInfo, org.bwapi.proxy.messages.TerrainMessages.DynamicTerrainInfo.Builder, org.bwapi.proxy.messages.TerrainMessages.DynamicTerrainInfoOrBuilder> 
          getDynamicTerrainInfoFieldBuilder() {
        if (dynamicTerrainInfoBuilder_ == null) {
          dynamicTerrainInfoBuilder_ = new com.google.protobuf.SingleFieldBuilder<
              org.bwapi.proxy.messages.TerrainMessages.DynamicTerrainInfo, org.bwapi.proxy.messages.TerrainMessages.DynamicTerrainInfo.Builder, org.bwapi.proxy.messages.TerrainMessages.DynamicTerrainInfoOrBuilder>(
                  dynamicTerrainInfo_,
                  getParentForChildren(),
                  isClean());
          dynamicTerrainInfo_ = null;
        }
        return dynamicTerrainInfoBuilder_;
      }