Change function behavior depending on class' generic type.

public class Lerpable<T>
{
    private readonly T _value1;
    private readonly T _value2;

    public Lerpable<T> (T value1, T value2)
    {
        _value1 = value1
        _value2 = value2
    }

    public T Lerp(float amount)
    {
        // Default behavior, I want to be able to change this depending on what T is.
        return amount > 0.5 ? _value2 : _value1;
    }
}