#' @param splash_obj Object created by a call to [splash()]
#' @param lua_sourc Browser automation script. See [Splash Script](http://splash.readthedocs.io/en/stable/scripting-tutorial.html#scripting-tutorial) Tutorial for more info.
#' @param timeout A timeout (in seconds) for the render (defaults to 30).
#' @param allowed_domains Comma-separated list of allowed domain names. If present, Splash won’t load anything neither from domains not in this list nor from subdomains of domains not in this list.
#' @param proxy Proxy profile name or proxy URL.
#' @param filters Comma-separated list of request filter names.
#' @param save_args A list of argument names to put in cache.
#' @param load_args Parameter values to load from cache
#' @return `raw` content from the `httr` call. Given the vast diversity of possible return values, it's up to the caller to handle the return value.