size(); public final boolean contains(Object); public final scala.collection.Iterator iterator(); public final void foreach(scala.Function1); public void Set$Set2(Object, Object); } scala/collection/immutable/Set$Set1.class package scala.collection.immutable; public final synchronized class Set$Set1 extends scala.collection.AbstractSet implements scala.Serializable, scala.collection.GenSet { private final Object elem1; public final scala.collection.generic.GenericCompanion companion(); public final sca...