code: public static void setupTracingConfig() {
      TracingUtilities.setupTracingConfig();
      List<String> descriptors = Arrays.asList(
        "BigtableTable.getTableDescriptor",
        "BigtableTable.exists",
        "BigtableTable.existsAll",
        "BigtableTable.batch",
        "BigtableTable.batchCallback",
        "BigtableTable.get",
        "BigtableTable.put",
        "BigtableTable.checkAndPut",
        "BigtableTable.delete",
        "BigtableTable.checkAndDelete",
        "BigtableTable.checkAndMutate",
        "BigtableTable.mutateRow",
        "BigtableTable.append",
        "BigtableTable.increment",
        "BigtableTable.incrementColumnValue"
      );
  
      Tracing.getExportComponent().getSampledSpanStore().registerSpanNamesForCollection(descriptors);
    }
docs: This is a one time setup for grpcz pages. This adds all of the methods to the Tracing
  environment required to show a consistent set of methods relating to Cloud Bigtable and HBase
  methods on the grpcz page.