A url/file ID string, an array of url/file ID strings, an array of [url/file ID, name] arrays, an array of file objects, or a single file object. File objects can be simple - ({ name, url }) or ({ name, id }) - or fully constructed ({ name, external: { url }}) or ({ name, file_upload: { id }})
OptionalfileName: stringa name for a singular file. Used if a string value is passed for the files parameter. If not provided, the file's URL/ID will be used for the name.
A files property object.
Sets a files property's value.