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. 
abstract class com.google.common.collect.Maps$IteratorBasedAbstractMap<K, V> extends java.util.AbstractMap<K, V>
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: com.google.common.collect.Maps$IteratorBasedAbstractMap
  super_class: java.util.AbstractMap
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
         0: .line 3522
            aload 0 /* this */
            invokespecial java.util.AbstractMap.<init>:()V
            return
        end local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Maps$IteratorBasedAbstractMap<TK;TV;>;

  public abstract int size();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  abstract java.util.Iterator<java.util.Map$Entry<K, V>> entryIterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0400) ACC_ABSTRACT
    Signature: ()Ljava/util/Iterator<Ljava/util/Map$Entry<TK;TV;>;>;

  java.util.Spliterator<java.util.Map$Entry<K, V>> entrySpliterator();
    descriptor: ()Ljava/util/Spliterator;
    flags: (0x0000) 
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
         0: .line 3530
            aload 0 /* this */
            invokevirtual com.google.common.collect.Maps$IteratorBasedAbstractMap.entryIterator:()Ljava/util/Iterator;
            aload 0 /* this */
            invokevirtual com.google.common.collect.Maps$IteratorBasedAbstractMap.size:()I
            i2l
            bipush 65
         1: .line 3529
            invokestatic java.util.Spliterators.spliterator:(Ljava/util/Iterator;JI)Ljava/util/Spliterator;
            areturn
        end local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/google/common/collect/Maps$IteratorBasedAbstractMap<TK;TV;>;
    Signature: ()Ljava/util/Spliterator<Ljava/util/Map$Entry<TK;TV;>;>;

  public java.util.Set<java.util.Map$Entry<K, V>> entrySet();
    descriptor: ()Ljava/util/Set;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
         0: .line 3535
            new com.google.common.collect.Maps$IteratorBasedAbstractMap$1
            dup
            aload 0 /* this */
            invokespecial com.google.common.collect.Maps$IteratorBasedAbstractMap$1.<init>:(Lcom/google/common/collect/Maps$IteratorBasedAbstractMap;)V
            areturn
        end local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/collect/Maps$IteratorBasedAbstractMap<TK;TV;>;
    Signature: ()Ljava/util/Set<Ljava/util/Map$Entry<TK;TV;>;>;

  void forEachEntry(java.util.function.Consumer<? super java.util.Map$Entry<K, V>>);
    descriptor: (Ljava/util/function/Consumer;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
        start local 1 // java.util.function.Consumer action
         0: .line 3559
            aload 0 /* this */
            invokevirtual com.google.common.collect.Maps$IteratorBasedAbstractMap.entryIterator:()Ljava/util/Iterator;
            aload 1 /* action */
            invokeinterface java.util.Iterator.forEachRemaining:(Ljava/util/function/Consumer;)V
         1: .line 3560
            return
        end local 1 // java.util.function.Consumer action
        end local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lcom/google/common/collect/Maps$IteratorBasedAbstractMap<TK;TV;>;
            0    2     1  action  Ljava/util/function/Consumer<-Ljava/util/Map$Entry<TK;TV;>;>;
    Signature: (Ljava/util/function/Consumer<-Ljava/util/Map$Entry<TK;TV;>;>;)V
    MethodParameters:
        Name  Flags
      action  

  public void clear();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
         0: .line 3564
            aload 0 /* this */
            invokevirtual com.google.common.collect.Maps$IteratorBasedAbstractMap.entryIterator:()Ljava/util/Iterator;
            invokestatic com.google.common.collect.Iterators.clear:(Ljava/util/Iterator;)V
         1: .line 3565
            return
        end local 0 // com.google.common.collect.Maps$IteratorBasedAbstractMap this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/google/common/collect/Maps$IteratorBasedAbstractMap<TK;TV;>;
}
Signature: <K:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/util/AbstractMap<TK;TV;>;
SourceFile: "Maps.java"
NestHost: com.google.common.collect.Maps
InnerClasses:
  abstract IteratorBasedAbstractMap = com.google.common.collect.Maps$IteratorBasedAbstractMap of com.google.common.collect.Maps
  com.google.common.collect.Maps$IteratorBasedAbstractMap$1
  public abstract Entry = java.util.Map$Entry of java.util.Map