https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
class com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl extends com.google.common.collect.CompactHashMap<K, V>.EntrySetView
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl
  super_class: com.google.common.collect.CompactHashMap$EntrySetView
{
  final com.google.common.collect.CompactLinkedHashMap this$0;
    descriptor: Lcom/google/common/collect/CompactLinkedHashMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.collect.CompactLinkedHashMap);
    descriptor: (Lcom/google/common/collect/CompactLinkedHashMap;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl this
         0: .line 212
            aload 0 /* this */
            aload 1
            putfield com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl.this$0:Lcom/google/common/collect/CompactLinkedHashMap;
            aload 0 /* this */
            aload 1
            invokespecial com.google.common.collect.CompactHashMap$EntrySetView.<init>:(Lcom/google/common/collect/CompactHashMap;)V
            return
        end local 0 // com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/CompactLinkedHashMap$1EntrySetImpl;
    MethodParameters:
        Name  Flags
      this$0  final

  public java.util.Spliterator<java.util.Map$Entry<K, V>> spliterator();
    descriptor: ()Ljava/util/Spliterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl this
         0: .line 215
            aload 0 /* this */
            bipush 17
            invokestatic java.util.Spliterators.spliterator:(Ljava/util/Collection;I)Ljava/util/Spliterator;
            areturn
        end local 0 // com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/CompactLinkedHashMap$1EntrySetImpl;
    Signature: ()Ljava/util/Spliterator<Ljava/util/Map$Entry<TK;TV;>;>;
}
Signature: Lcom/google/common/collect/CompactHashMap<TK;TV;>.EntrySetView;
SourceFile: "CompactLinkedHashMap.java"
EnclosingMethod: com.google.common.collect.CompactLinkedHashMap.createEntrySet:()Ljava/util/Set;
NestHost: com.google.common.collect.CompactLinkedHashMap
InnerClasses:
  EntrySetView = com.google.common.collect.CompactHashMap$EntrySetView of com.google.common.collect.CompactHashMap
  EntrySetImpl = com.google.common.collect.CompactLinkedHashMap$1EntrySetImpl
  public abstract Entry = java.util.Map$Entry of java.util.Map