Main.hx:4: characters 28-31 : Class<Two> should be Class<Unknown<0> : One>
Main.hx:4: characters 28-31 : ... Constraint check failure for downcast.S
Main.hx:4: characters 28-31 : ... Two should be One
Main.hx:4: characters 28-31 : ... For function argument 'c'
Main.hx:5: characters 29-33 : Class<ITwo> should be Class<Unknown<0> : IOne>
Main.hx:5: characters 29-33 : ... Constraint check failure for downcast.S
Main.hx:5: characters 29-33 : ... ITwo should be IOne
Main.hx:5: characters 29-33 : ... For function argument 'c'