add set builder utility class

src/main/java/com/liveramp/commons/collections/set/SetBuilder.java

@@ -0,0 +1,43 @@
+package com.liveramp.commons.collections.set;
+
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Set;
+
+import com.google.common.collect.Sets;
+
+public class SetBuilder<V> {
+
+  private Set<V> set;
+
+  public SetBuilder() {
+    this(Sets.<V>newHashSet());
+  }
+
+  public SetBuilder(Set<V> set) {
+    this.set = Sets.newHashSet(set);
+  }
+
+  public SetBuilder<V> add(V value) {
+    set.add(value);
+    return this;
+  }
+
+  public SetBuilder<V> add(V... values) {
+    Collections.addAll(set, values);
+    return this;
+  }
+
+  public SetBuilder<V> addAll(Collection<? extends V> other) {
+    set.addAll(other);
+    return this;
+  }
+
+  public Set<V> get() {
+    return set;
+  }
+
+  public Set<V> asUnmodifiableSet() {
+    return Collections.unmodifiableSet(set);
+  }
+}