Retrieving playlist items with getPlaylistContents adds additional decimals to IDs

[robatosan]

When performing a request like so:

Double id = 1234d;

GetPlaylistContentsResponse response = plexAPI
    .playlists()
    .getPlaylistContents(id, GetPlaylistContentsQueryParamType.Audio);

The resulting request looks like this:

// the id gets an additional decimal number
http://plex-server-address:32400/playlists/1234.0/items?type=8

From what I can see in the JSON responses, the ID (or ratingKey) is usually sent as a string and not a number in all JSON responses. I haven't tested it with other SDKs yet, but I assume that this affects Java specifically, as per default a double is converted to 1234.0 with its builtin toString method.

I guess it would be the safest to just define the ratingKey as a string and not interpret it as numeric.