Add lazy group implementation and creator.

[demoscenemusic.git] / src / main / java / net / pterodactylus / demoscenemusic / data / Artist.java

diff --git a/src/main/java/net/pterodactylus/demoscenemusic/data/Artist.java b/src/main/java/net/pterodactylus/demoscenemusic/data/Artist.java
index f1874b2..f0948da 100644 (file)
--- a/src/main/java/net/pterodactylus/demoscenemusic/data/Artist.java
+++ b/src/main/java/net/pterodactylus/demoscenemusic/data/Artist.java
@@ -17,7 +17,7 @@
 
 package net.pterodactylus.demoscenemusic.data;
 
-import java.util.Set;
+import java.util.Collection;
 
 /**
  * TODO
@@ -30,8 +30,12 @@ public interface Artist extends Base {
 
        public Artist name(String name);
 
-       public Set<Group> groups();
+       public Collection<Group> groups();
 
-       public Artist groups(Set<Group> groups);
+       public Artist groups(Collection<Group> groups);
+
+       public Collection<Track> tracks();
+
+       public Artist tracks(Collection<Track> tracks);
 
 }