It is not implemented.
You can write your own implementation handling from
and to
UNIX timestamp:
public static PaginatedResult<Track> getRecentTracks(String user, int page,
int limit, String apiKey, int from, int to) {
Map<String, String> params = new HashMap<String, String>();
params.put("user", user);
params.put("limit", String.valueOf(limit));
params.put("page", String.valueOf(page));
params.put("from", String.valueOf(from));
params.put("to", String.valueOf(to));
Result result = Caller.getInstance().call("user.getRecentTracks", apiKey, params);
return ResponseBuilder.buildPaginatedResult(result, Track.class);
}