anchor.diff:  
   			final jwt = new JWT.parse(client.credentials.accessToken);
   			final credsJson = client.credentials.toJson();
  -			final String role = jwt.getClaim('role');
  -			final String uniqueName = jwt.getClaim('unique_name');
  +			final String role = jwt.getClaim(ROLE_CLAIM);
  +			final String name = jwt.getClaim(NAME_CLAIM);
   
   			print('Authentication successful.');
   
  
positive.code: 				: window.sessionStorage;
  
  			storage[TOKEN_KEY] = credsJson;
  			storage[UNIQUE_NAME_KEY] = uniqueName;
  			storage[ROLE_KEY] = role;
  
  			return client;
  
negative.code: 
  		window.localStorage.remove(ROLE_KEY);
  		window.localStorage.remove(TOKEN_KEY);
  		window.localStorage.remove(NAME_KEY);
  
  		window.sessionStorage.remove(ROLE_KEY);
  		window.sessionStorage.remove(TOKEN_KEY);
  		window.sessionStorage.remove(NAME_KEY);
  	}
  
  	String _getValue(String key) {
  