https://www.graalvm.org/ 
final class com.oracle.truffle.polyglot.PolyglotMap$LazyEntries extends java.util.AbstractSet<java.util.Map$Entry<K, V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.polyglot.PolyglotMap$LazyEntries
  super_class: java.util.AbstractSet
{
  private final java.util.List<?> props;
    descriptor: Ljava/util/List;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/List<*>;

  private final int keysSize;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final int elemSize;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  final com.oracle.truffle.polyglot.PolyglotMap this$0;
    descriptor: Lcom/oracle/truffle/polyglot/PolyglotMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 168
            ldc Lcom/oracle/truffle/polyglot/PolyglotMap;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.$assertionsDisabled:Z
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>(java.util.List<?>, int, );
    descriptor: (Lcom/oracle/truffle/polyglot/PolyglotMap;Ljava/util/List;II)V
    flags: (0x0000) 
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
        start local 2 // java.util.List keys
        start local 3 // int keysSize
        start local 4 // int elemSize
         0: .line 174
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.this$0:Lcom/oracle/truffle/polyglot/PolyglotMap;
            aload 0 /* this */
            invokespecial java.util.AbstractSet.<init>:()V
         1: .line 175
            getstatic com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.$assertionsDisabled:Z
            ifne 2
            aload 2 /* keys */
            ifnonnull 2
            iload 3 /* keysSize */
            ifeq 2
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         2: .line 176
      StackMap locals: com.oracle.truffle.polyglot.PolyglotMap$LazyEntries com.oracle.truffle.polyglot.PolyglotMap java.util.List int int
      StackMap stack:
            aload 0 /* this */
            aload 2 /* keys */
            putfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.props:Ljava/util/List;
         3: .line 177
            aload 0 /* this */
            iload 3 /* keysSize */
            putfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.keysSize:I
         4: .line 178
            aload 0 /* this */
            iload 4 /* elemSize */
            putfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.elemSize:I
         5: .line 179
            return
        end local 4 // int elemSize
        end local 3 // int keysSize
        end local 2 // java.util.List keys
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    6     0      this  Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;
            0    6     2      keys  Ljava/util/List<*>;
            0    6     3  keysSize  I
            0    6     4  elemSize  I
    Signature: (Ljava/util/List<*>;II)V
    MethodParameters:
          Name  Flags
      this$0    final
      keys      
      keysSize  
      elemSize  

  public java.util.Iterator<java.util.Map$Entry<K, V>> iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
         0: .line 183
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.keysSize:I
            ifle 2
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.elemSize:I
            ifle 2
         1: .line 184
            new com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$CombinedIterator
            dup
            aload 0 /* this */
            invokespecial com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$CombinedIterator.<init>:(Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;)V
            areturn
         2: .line 185
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.keysSize:I
            ifle 4
         3: .line 186
            new com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$LazyKeysIterator
            dup
            aload 0 /* this */
            invokespecial com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$LazyKeysIterator.<init>:(Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;)V
            areturn
         4: .line 188
      StackMap locals:
      StackMap stack:
            new com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$ElementsIterator
            dup
            aload 0 /* this */
            invokespecial com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$ElementsIterator.<init>:(Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;)V
            areturn
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;
    Signature: ()Ljava/util/Iterator<Ljava/util/Map$Entry<TK;TV;>;>;

  public int size();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
         0: .line 194
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.props:Ljava/util/List;
            ifnull 1
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.props:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            goto 2
      StackMap locals:
      StackMap stack:
         1: aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.keysSize:I
      StackMap locals:
      StackMap stack: int
         2: aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.elemSize:I
            iadd
            ireturn
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;

  public boolean contains(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
        start local 1 // java.lang.Object o
         0: .line 199
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.this$0:Lcom/oracle/truffle/polyglot/PolyglotMap;
            aload 1 /* o */
            invokevirtual com.oracle.truffle.polyglot.PolyglotMap.containsKey:(Ljava/lang/Object;)Z
            ireturn
        end local 1 // java.lang.Object o
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;
            0    1     1     o  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      o     

  public boolean remove(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
        start local 1 // java.lang.Object o
         0: .line 205
            aload 1 /* o */
            instanceof java.util.Map$Entry
            ifeq 3
         1: .line 206
            aload 1 /* o */
            checkcast java.util.Map$Entry
            astore 2 /* e */
        start local 2 // java.util.Map$Entry e
         2: .line 207
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.this$0:Lcom/oracle/truffle/polyglot/PolyglotMap;
            getfield com.oracle.truffle.polyglot.PolyglotMap.cache:Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache.removeBoolean:Lcom/oracle/truffle/api/CallTarget;
            iconst_4
            anewarray java.lang.Object
            dup
            iconst_0
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.this$0:Lcom/oracle/truffle/polyglot/PolyglotMap;
            getfield com.oracle.truffle.polyglot.PolyglotMap.languageContext:Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;
            aastore
            dup
            iconst_1
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.this$0:Lcom/oracle/truffle/polyglot/PolyglotMap;
            getfield com.oracle.truffle.polyglot.PolyglotMap.guestObject:Ljava/lang/Object;
            aastore
            dup
            iconst_2
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getKey:()Ljava/lang/Object;
            aastore
            dup
            iconst_3
            aload 2 /* e */
            invokeinterface java.util.Map$Entry.getValue:()Ljava/lang/Object;
            aastore
            invokeinterface com.oracle.truffle.api.CallTarget.call:([Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Boolean
            invokevirtual java.lang.Boolean.booleanValue:()Z
            ireturn
        end local 2 // java.util.Map$Entry e
         3: .line 209
      StackMap locals:
      StackMap stack:
            iconst_0
            ireturn
        end local 1 // java.lang.Object o
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$LazyEntries this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;
            0    4     1     o  Ljava/lang/Object;
            2    3     2     e  Ljava/util/Map$Entry<Ljava/lang/Object;Ljava/lang/Object;>;
    MethodParameters:
      Name  Flags
      o     

  static com.oracle.truffle.polyglot.PolyglotMap access$0(com.oracle.truffle.polyglot.PolyglotMap$LazyEntries);
    descriptor: (Lcom/oracle/truffle/polyglot/PolyglotMap$LazyEntries;)Lcom/oracle/truffle/polyglot/PolyglotMap;
    flags: (0x1008) ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 168
            aload 0
            getfield com.oracle.truffle.polyglot.PolyglotMap$LazyEntries.this$0:Lcom/oracle/truffle/polyglot/PolyglotMap;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/util/AbstractSet<Ljava/util/Map$Entry<TK;TV;>;>;
SourceFile: "PolyglotMap.java"
NestHost: com.oracle.truffle.polyglot.PolyglotMap
InnerClasses:
  final Cache = com.oracle.truffle.polyglot.PolyglotMap$Cache of com.oracle.truffle.polyglot.PolyglotMap
  private final LazyEntries = com.oracle.truffle.polyglot.PolyglotMap$LazyEntries of com.oracle.truffle.polyglot.PolyglotMap
  private final CombinedIterator = com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$CombinedIterator of com.oracle.truffle.polyglot.PolyglotMap$LazyEntries
  private final ElementsIterator = com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$ElementsIterator of com.oracle.truffle.polyglot.PolyglotMap$LazyEntries
  private final LazyKeysIterator = com.oracle.truffle.polyglot.PolyglotMap$LazyEntries$LazyKeysIterator of com.oracle.truffle.polyglot.PolyglotMap$LazyEntries
  public abstract Entry = java.util.Map$Entry of java.util.Map