lib/contacts-groups-members-get.js
function ContactsGroupsMembersGet(options, groupId, contactId) {
    ActionAbstract.call(this, options);
    this._groupId = groupId;
    this._contactId = contactId;
}
function ContactsGroupsMembersGet(options, groupId, contactId) {
    ActionAbstract.call(this, options);
    this._groupId = groupId;
    this._contactId = contactId;
}
function ContactsGroupsMembersGet ( options , groupId , contactId ) { ActionAbstract . call ( this , options ) ; this . _groupId = groupId ; this . _contactId = contactId ; }
check whether contact is in group
@see http://dev.smsapi.pl/#!/contacts%2Fgroups/contactsGet
@param {Object} options
@param {String} groupId
@param {String} contactId
@extends ActionAbstract
@constructor
check whether contact is in group