public static String getRpcPackageAndService(final Descriptors.ServiceDescriptor sd) {
    // it happens that `getFullName` returns a string in the $package.$service format required by
    // the otel RPC specification. Use it for now; might have to parse the value in the future.
    return sd.getFullName();
  }
Retrieve the combined {@code $package.$service} value from {@code sd}.
hbase-client/src/main/java/org/apache/hadoop/hbase/client/trace/IpcClientSpanBuilder.java