GetKey(String) is not implemented.

[lordpidey]

Unity's Input class has a method with the handle Input.GetKey(string)

However, InputManager does not.

[daemon3000]

I know. I decided not to include it. You're not really supposed to use InputManager.GetKey(the KeyCode version is there for buttons and digital axes) because you won't be able rebind your inputs. You should use InputManager.GetButton.

If you really need InputManager.GetKey(string) add this at the end of the InputManager_Unity.cs file:

public static bool GetKey(string key)
{
    return Input.GetKey(key);
}

public static bool GetKeyDown(string key)
{
    return Input.GetKeyDown(key);
}

public static bool GetKeyUp(string key)
{
    return Input.GetKeyUp(key);
}