code: func (s *AccountsService) CheckAccountCapability(accountID, capabilityID string) (string, *Response, error) {
  	u := fmt.Sprintf("accounts/%s/capabilities/%s", accountID, capabilityID)
  	return getStringResponseWithoutOptions(s.client, u)
  }
docs: // CheckAccountCapability checks if a user has a certain global capability.
  //
  // If the user has the global capability the string ok is returned.
  // If the user doesn’t have the global capability the response is “404 Not Found”.
  //
  // Gerrit API docs: https://gerrit-review.googlesource.com/Documentation/rest-api-accounts.html#check-account-capability