Convert elements and partitions to properties

util/src/main/java/dev/openrs2/util/collect/DisjointSet.kt

@@ -3,9 +3,10 @@ package dev.openrs2.util.collect
 interface DisjointSet<T> : Iterable<DisjointSet.Partition<T>> {
     interface Partition<T> : Iterable<T>
 
+    val elements: Int
+    val partitions: Int
+
     fun add(x: T): Partition<T>
     operator fun get(x: T): Partition<T>?
     fun union(x: Partition<T>, y: Partition<T>)
-    fun elements(): Int
-    fun partitions(): Int
 }

util/src/main/java/dev/openrs2/util/collect/ForestDisjointSet.java

@@ -154,12 +154,12 @@ public final class ForestDisjointSet<T> implements DisjointSet<T> {
 	}
 
 	@Override
-	public int elements() {
+	public int getElements() {
 		return elements;
 	}
 
 	@Override
-	public int partitions() {
+	public int getPartitions() {
 		return partitions;
 	}