code: public OvhTask organizationName_service_exchangeService_mailingList_mailingListAddress_member_contact_POST(String organizationName, String exchangeService, String mailingListAddress, Long memberAccountId, Long memberContactId) throws IOException {
  		String qPath = "/email/exchange/{organizationName}/service/{exchangeService}/mailingList/{mailingListAddress}/member/contact";
  		StringBuilder sb = path(qPath, organizationName, exchangeService, mailingListAddress);
  		HashMap<String, Object>o = new HashMap<String, Object>();
  		addBody(o, "memberAccountId", memberAccountId);
  		addBody(o, "memberContactId", memberContactId);
  		String resp = exec(qPath, "POST", sb.toString(), o);
  		return convertTo(resp, OvhTask.class);
  	}
docs: Add new mailing list member
  
  REST: POST /email/exchange/{organizationName}/service/{exchangeService}/mailingList/{mailingListAddress}/member/contact
  @param memberAccountId [required] Member account id
  @param memberContactId [required] Member contact id
  @param organizationName [required] The internal name of your exchange organization
  @param exchangeService [required] The internal name of your exchange service
  @param mailingListAddress [required] The mailing list address