How to use the inql.utils.raw_request function in inql

introspection_query =  "query IntrospectionQuery{__schema{queryType{name}mutationType{name}subscriptionType{name}types{...FullType}directives{name description locations args{...InputValue}}}}fragment FullType on __Type{kind name description fields(includeDeprecated:true){name description args{...InputValue}type{...TypeRef}isDeprecated deprecationReason}inputFields{...InputValue}interfaces{...TypeRef}enumValues(includeDeprecated:true){name description isDeprecated deprecationReason}possibleTypes{...TypeRef}}fragment InputValue on __InputValue{name description type{...TypeRef}defaultValue}fragment TypeRef on __Type{kind name ofType{kind name ofType{kind name ofType{kind name ofType{kind name ofType{kind name ofType{kind name ofType{kind name}}}}}}}}"
    old_introspection_query =  "query IntrospectionQuery{__schema{queryType{name}mutationType{name}subscriptionType{name}types{...FullType}directives{name description args{...InputValue}onOperation onFragment onField}}}fragment FullType on __Type{kind name description fields(includeDeprecated:true){name description args{...InputValue}type{...TypeRef}isDeprecated deprecationReason}inputFields{...InputValue}interfaces{...TypeRef}enumValues(includeDeprecated:true){name description isDeprecated deprecationReason}possibleTypes{...TypeRef}}fragment InputValue on __InputValue{name description type{...TypeRef}defaultValue}fragment TypeRef on __Type{kind name ofType{kind name ofType{kind name ofType{kind name}}}}"
    # -----------------------
    if 'User-Agent' not in headers:
        headers['User-Agent'] = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:55.0) Gecko/20100101 Firefox/55.0"

    if key:
        headers['Authorization'] = key

    try:
        # Issue the Introspection request against the GraphQL endpoint
        request = urllib_request.Request(target, json.dumps({"query": introspection_query}, sort_keys=True).encode('UTF-8'), headers=headers)
        request.add_header('Content-Type', 'application/json')

        url = urlparse(target)
        reqbody = raw_request(request)
        if url.netloc not in requests:
            requests[url.netloc] = {}
        requests[url.netloc]['POST'] = (None, reqbody)
        requests[url.netloc]['url'] = target

        if verify_certificate:
            contents = urllib_request.urlopen(request).read()
        else:
            ctx = ssl.create_default_context()
            ctx.check_hostname = False
            ctx.verify_mode = ssl.CERT_NONE

            contents = urllib_request.urlopen(request, context=ctx).read()

        stub_responses[url.netloc] = contents