Params
Let's soup it up a little by adding matrix or route-specific parameters, so the result URL looks like this: /inbox;a=v1/33;b1=v1;b2=v2
:
[ {path: 'inbox', params: {a: 'v1'}}, {path: '33', params: {b1: 'v1', b2: 'v2'}} ]
Matrix parameters are scoped to a particular URL segment. Because of this, there is no risk of name collisions.