Method increment

plugins/esi/esi.cc:179–183

  }

  void
  increment(int handle, int step = 1) override
  {
    TSStatIntIncrement(g_stat_indices[handle], step);
  }
};

static bool checkHeaderValue(TSMBuffer bufp, TSMLoc hdr_loc, const char *name, int name_len, const char *exp_value = nullptr,