Unset "this._client" if no param-free context

[wilkohein]

In case the RAML file ONLY has URLs with URL parameters (i.e. "/foo/{foo}") the generator is only spitting out in constructor.
{code}
setprototypeof(client, this)
{code}
but NO specific mappings like
{code}
this.bazz = new Resource5(client, '/bazz')
setprototypeof(client, this)
{code}

However, this causes this._client to be never set as the "client" created here is never injected.

Workaround:
Add setter in constructor:
{code}
this._client=client;
setprototypeof(client, this)
{code}