def initialize(includes)
Utils.check_options includes,
:artist, :counts, :release_groups, :release_events, :discs, :tracks,
:labels, :isrcs, :artist_rels, :release_rels, :track_rels,
:label_rels, :url_rels, :track_level_rels, :tags, :user_tags,
:ratings, :user_ratings
@parameters = Array.new
@parameters << 'artist' if includes[:artist]
@parameters << 'counts' if includes[:counts]
@parameters << 'release-groups' if includes[:release_groups]
@parameters << 'release-events' if includes[:release_events]
@parameters << 'discs' if includes[:discs]
@parameters << 'tracks' if includes[:tracks]
@parameters << 'labels' if includes[:labels]
@parameters << 'isrcs' if includes[:isrcs]
@parameters << 'artist-rels' if includes[:artist_rels]
@parameters << 'release-rels' if includes[:release_rels]
@parameters << 'track-rels' if includes[:track_rels]
@parameters << 'label-rels' if includes[:label_rels]
@parameters << 'url-rels' if includes[:url_rels]
@parameters << 'track-level-rels' if includes[:track_level_rels]
@parameters << 'tags' if includes[:tags]
@parameters << 'user-tags' if includes[:user_tags]
@parameters << 'ratings' if includes[:ratings]
@parameters << 'user-ratings' if includes[:user_ratings]
end