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.ImmutableSortedMap$1EntrySet extends com.google.common.collect.ImmutableMapEntrySet<K, V>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.google.common.collect.ImmutableSortedMap$1EntrySet
  super_class: com.google.common.collect.ImmutableMapEntrySet
{
  final com.google.common.collect.ImmutableSortedMap this$0;
    descriptor: Lcom/google/common/collect/ImmutableSortedMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.google.common.collect.ImmutableSortedMap);
    descriptor: (Lcom/google/common/collect/ImmutableSortedMap;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
         0: .line 612
            aload 0 /* this */
            aload 1
            putfield com.google.common.collect.ImmutableSortedMap$1EntrySet.this$0:Lcom/google/common/collect/ImmutableSortedMap;
            aload 0 /* this */
            invokespecial com.google.common.collect.ImmutableMapEntrySet.<init>:()V
            return
        end local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;
    MethodParameters:
        Name  Flags
      this$0  final

  public com.google.common.collect.UnmodifiableIterator<java.util.Map$Entry<K, V>> iterator();
    descriptor: ()Lcom/google/common/collect/UnmodifiableIterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
         0: .line 615
            aload 0 /* this */
            invokevirtual com.google.common.collect.ImmutableSortedMap$1EntrySet.asList:()Lcom/google/common/collect/ImmutableList;
            invokevirtual com.google.common.collect.ImmutableList.iterator:()Lcom/google/common/collect/UnmodifiableIterator;
            areturn
        end local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;
    Signature: ()Lcom/google/common/collect/UnmodifiableIterator<Ljava/util/Map$Entry<TK;TV;>;>;

  public java.util.Spliterator<java.util.Map$Entry<K, V>> spliterator();
    descriptor: ()Ljava/util/Spliterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
         0: .line 620
            aload 0 /* this */
            invokevirtual com.google.common.collect.ImmutableSortedMap$1EntrySet.asList:()Lcom/google/common/collect/ImmutableList;
            invokevirtual com.google.common.collect.ImmutableList.spliterator:()Ljava/util/Spliterator;
            areturn
        end local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;
    Signature: ()Ljava/util/Spliterator<Ljava/util/Map$Entry<TK;TV;>;>;

  public void forEach(java.util.function.Consumer<? super java.util.Map$Entry<K, V>>);
    descriptor: (Ljava/util/function/Consumer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
        start local 1 // java.util.function.Consumer action
         0: .line 625
            aload 0 /* this */
            invokevirtual com.google.common.collect.ImmutableSortedMap$1EntrySet.asList:()Lcom/google/common/collect/ImmutableList;
            aload 1 /* action */
            invokevirtual com.google.common.collect.ImmutableList.forEach:(Ljava/util/function/Consumer;)V
         1: .line 626
            return
        end local 1 // java.util.function.Consumer action
        end local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;
            0    2     1  action  Ljava/util/function/Consumer<-Ljava/util/Map$Entry<TK;TV;>;>;
    Signature: (Ljava/util/function/Consumer<-Ljava/util/Map$Entry<TK;TV;>;>;)V
    MethodParameters:
        Name  Flags
      action  

  com.google.common.collect.ImmutableList<java.util.Map$Entry<K, V>> createAsList();
    descriptor: ()Lcom/google/common/collect/ImmutableList;
    flags: (0x0000) 
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
         0: .line 630
            new com.google.common.collect.ImmutableSortedMap$1EntrySet$1
            dup
            aload 0 /* this */
            invokespecial com.google.common.collect.ImmutableSortedMap$1EntrySet$1.<init>:(Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;)V
            areturn
        end local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;
    Signature: ()Lcom/google/common/collect/ImmutableList<Ljava/util/Map$Entry<TK;TV;>;>;

  com.google.common.collect.ImmutableMap<K, V> map();
    descriptor: ()Lcom/google/common/collect/ImmutableMap;
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
         0: .line 652
            aload 0 /* this */
            getfield com.google.common.collect.ImmutableSortedMap$1EntrySet.this$0:Lcom/google/common/collect/ImmutableSortedMap;
            areturn
        end local 0 // com.google.common.collect.ImmutableSortedMap$1EntrySet this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;
    Signature: ()Lcom/google/common/collect/ImmutableMap<TK;TV;>;

  public java.util.Iterator iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.google.common.collect.ImmutableSortedMap$1EntrySet.iterator:()Lcom/google/common/collect/UnmodifiableIterator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  static com.google.common.collect.ImmutableSortedMap access$1(com.google.common.collect.ImmutableSortedMap$1EntrySet);
    descriptor: (Lcom/google/common/collect/ImmutableSortedMap$1EntrySet;)Lcom/google/common/collect/ImmutableSortedMap;
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 612
            aload 0
            getfield com.google.common.collect.ImmutableSortedMap$1EntrySet.this$0:Lcom/google/common/collect/ImmutableSortedMap;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Lcom/google/common/collect/ImmutableMapEntrySet<TK;TV;>;
SourceFile: "ImmutableSortedMap.java"
EnclosingMethod: com.google.common.collect.ImmutableSortedMap.createEntrySet:()Lcom/google/common/collect/ImmutableSet;
NestHost: com.google.common.collect.ImmutableSortedMap
InnerClasses:
  EntrySet = com.google.common.collect.ImmutableSortedMap$1EntrySet
  com.google.common.collect.ImmutableSortedMap$1EntrySet$1
  public abstract Entry = java.util.Map$Entry of java.util.Map