Attach a file to an existing resource node
attach_file_to_node(nid, url = get_url(), credentials = list(cookie =
dkanr::get_cookie(), token = dkanr::get_token()), file_path, attach = 1)
character: DKAN resource node ID
character: The DKAN site URL
Optional list parameter. Default values are Cookie and Token generated by dkan_setup()
character: path to file on local machine
numeric: Setting the attach parameter to 0 ensures that the file will replace any existing file on the resource. Setting it to 1 will result in a rejected request if the resource already has an attached file (but it will work if the resource file upload field is empty).