code: public Boolean packName_exchangeLite_options_isEmailAvailable_GET(String packName, String email) throws IOException {
  		String qPath = "/pack/xdsl/{packName}/exchangeLite/options/isEmailAvailable";
  		StringBuilder sb = path(qPath, packName);
  		query(sb, "email", email);
  		String resp = exec(qPath, "GET", sb.toString(), null);
  		return convertTo(resp, Boolean.class);
  	}
docs: Check if the email address is available for service creation
  
  REST: GET /pack/xdsl/{packName}/exchangeLite/options/isEmailAvailable
  @param email [required] Email
  @param packName [required] The internal name of your pack