docs: public static String extractMethodName(final MethodDescriptor<?, ?> method) {
          // This method is the equivalent of MethodDescriptor.extractFullServiceName
          final String fullMethodName = method.getFullMethodName();
          final int index = fullMethodName.lastIndexOf('/');
          if (index == -1) {
              return fullMethodName;
          }
          return fullMethodName.substring(index + 1);
      }