You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: unshare.go
    path of file: ./repos/zrok/rest_server_zrok/operations/share
    
    the code of the file until where you have to start completion: // Code generated by go-swagger; DO NOT EDIT.

package share

// This file was generated by the swagger tool.
// Editing this file might prove futile when you re-run the generate command

import (
	"net/http"

	"github.com/go-openapi/runtime/middleware"

	"github.com/openziti/zrok/rest_model_zrok"
)

// UnshareHandlerFunc turns a function with the right signature into a unshare handler
type UnshareHandlerFunc func(UnshareParams, *rest_model_zrok.Principal) middleware.Responder

// Handle executing the request and ret
    
func (o *Unshare) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
	route, rCtx, _ := o.Context.RouteInfo(r)
	if rCtx != nil {
		*r = *rCtx
	}
	var Params = NewUnshareParams()
	uprinc, aCtx, err := o.Context.Authorize(r, route)
	if err != nil {
		o.Context.Respond(rw, r, route.Produces, route, err)
		return
	}
	if aCtx != nil {
		*r = *aCtx
	}
	var principal *rest_model_zrok.Principal
	if uprinc != nil {
		principal = uprinc.(*rest_model_zrok.Principal) // this is really a rest_model_zrok.Principal, I promise
	}

	if err := o.Context.BindValidRequest(r, route, &Params); err != nil { // bind params
		o.Context.Respond(rw, r, route.Produces, route, err)
		return
	}

	res := o.Handler.Handle(Params, principal) // actually handle the request
	o.Context.Respond(rw, r, route.Produces, route, res)

}