public static Chart<Track> getMetroUniqueTrackChart(
Metro metro, String start, String end, String apiKey) {
return getMetroUniqueTrackChart(metro.getCountry(), metro.getName(), start, end, apiKey);
}
public static Chart<Artist> getMetroHypeArtistChart(
Metro metro, String start, String end, String apiKey) {
return getMetroHypeArtistChart(metro.getCountry(), metro.getName(), start, end, apiKey);
}