correct return type in getKeyOfDemeterMockFor()
correct return type in getKeyOfDemeterMockFor()

florianeckerstorfer/mockery,yeka/mockery,Big-Shark/mockery,fhinkel/mockery,padraic/mockery,Big-Shark/mockery,5outh/mockery,5outh/mockery,tfrommen/mockery,jenswiese/mockery,kminh/mockery,TiagoMaiaL/mockery,florianeckerstorfer/mockery,tfrommen/mockery,kminh/mockery,jenswiese/mockery,TiagoMaiaL/mockery,yeka/mockery,fhinkel/mockery