code: public void setDefaultSipDomain_POST(OvhNumberCountryEnum country, String domain, OvhSipDomainProductTypeEnum type) throws IOException {
  		String qPath = "/telephony/setDefaultSipDomain";
  		StringBuilder sb = path(qPath);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "country", country);
  		addBody(o, "domain", domain);
  		addBody(o, "type", type);
  		exec(qPath, "POST", sb.toString(), o);
  	}
docs: Get all available SIP domains by country
  
  REST: POST /telephony/setDefaultSipDomain
  @param domain [required] SIP domain to set
  @param type [required] Product type
  @param country [required] Country