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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def layout(request, ident, stateless=False, cache_id=None, **kwargs):
    'Return the layout of the dash application'
    _, app = DashApp.locate_item(ident, stateless)

    view_func = app.locate_endpoint_function('dash-layout')
    resp = view_func()

    initial_arguments = get_initial_arguments(request, cache_id)

    response_data, mimetype = app.augment_initial_layout(resp, initial_arguments)
    return HttpResponse(response_data,
                        content_type=mimetype)