code: function findById(id) {
    return db
      .collection(config.get('arangodb:collections:users:name'))
      .document(id)
      .then((user) => {
        user._id = user._key;
  
        return user;
      })
      .catch({code: 404}, () => null);
  }
docs: /*
  user {
  "_key": "123frank",
  "username": "frank",
  "password": "test",
  "name": "Farmer Frank",
  "family_name": "Frank",
  "given_name": "Farmer",
  "middle_name": "",
  "nickname": "Frankie",
  "email": "frank@openag.io"
  }