https://github.com/eclipse/eclipse-collections/eclipse-collections: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar 
final class org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy<K, V> extends org.eclipse.collections.impl.multimap.ImmutableMultimapSerializationProxy<K, V, org.eclipse.collections.api.set.ImmutableSet<V>> implements java.io.Externalizable
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy
  super_class: org.eclipse.collections.impl.multimap.ImmutableMultimapSerializationProxy
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy this
         0: .line 91
            aload 0 /* this */
            invokespecial org.eclipse.collections.impl.multimap.ImmutableMultimapSerializationProxy.<init>:()V
         1: .line 94
            return
        end local 0 // org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/impl/multimap/set/ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy<TK;TV;>;

  private void <init>(org.eclipse.collections.api.map.ImmutableMap<K, org.eclipse.collections.api.set.ImmutableSet<V>>);
    descriptor: (Lorg/eclipse/collections/api/map/ImmutableMap;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy this
        start local 1 // org.eclipse.collections.api.map.ImmutableMap map
         0: .line 98
            aload 0 /* this */
            aload 1 /* map */
            invokespecial org.eclipse.collections.impl.multimap.ImmutableMultimapSerializationProxy.<init>:(Lorg/eclipse/collections/api/map/ImmutableMap;)V
         1: .line 99
            return
        end local 1 // org.eclipse.collections.api.map.ImmutableMap map
        end local 0 // org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/impl/multimap/set/ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy<TK;TV;>;
            0    2     1   map  Lorg/eclipse/collections/api/map/ImmutableMap<TK;Lorg/eclipse/collections/api/set/ImmutableSet<TV;>;>;
    Signature: (Lorg/eclipse/collections/api/map/ImmutableMap<TK;Lorg/eclipse/collections/api/set/ImmutableSet<TV;>;>;)V
    MethodParameters:
      Name  Flags
      map   

  protected org.eclipse.collections.impl.multimap.AbstractMutableMultimap<K, V, org.eclipse.collections.api.set.MutableSet<V>> createEmptyMutableMultimap();
    descriptor: ()Lorg/eclipse/collections/impl/multimap/AbstractMutableMultimap;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy this
         0: .line 104
            new org.eclipse.collections.impl.multimap.set.UnifiedSetMultimap
            dup
            invokespecial org.eclipse.collections.impl.multimap.set.UnifiedSetMultimap.<init>:()V
            areturn
        end local 0 // org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/multimap/set/ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy<TK;TV;>;
    Signature: ()Lorg/eclipse/collections/impl/multimap/AbstractMutableMultimap<TK;TV;Lorg/eclipse/collections/api/set/MutableSet<TV;>;>;
}
Signature: <K:Ljava/lang/Object;V:Ljava/lang/Object;>Lorg/eclipse/collections/impl/multimap/ImmutableMultimapSerializationProxy<TK;TV;Lorg/eclipse/collections/api/set/ImmutableSet<TV;>;>;Ljava/io/Externalizable;
SourceFile: "ImmutableSetMultimapImpl.java"
NestHost: org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl
InnerClasses:
  private final ImmutableSetMultimapSerializationProxy = org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl$ImmutableSetMultimapSerializationProxy of org.eclipse.collections.impl.multimap.set.ImmutableSetMultimapImpl