I'm curious, what made you decide to use final classes and private properties in your Client class? I'd recommend taking a look at https://ocramius.github.io/bl

I'm curious, what made you decide to use final classes and private properties in your Client class? I'd recommend taking a look at https://ocramius.github.io/blog/when-to-declare-classes-final/ https://ocramius.github.io/blog/when-to-declare-classes-fina... if you haven't seen it before.