Code is compiling but IntelliJ warns about invalid types. <img width="908" alt="zrzut ekranu 2016-05-03 o 11 15 27" src="https://cloud.githubusercontent.com/assets/3899229/14979095/81bab6ee-1120-11e6-8fad-e11c337b148a.png">
Code is compiling but IntelliJ warns about invalid types.
