https://www.graalvm.org/ 
abstract class com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode extends com.oracle.truffle.polyglot.PolyglotMap$Cache$PolyglotMapNode
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode
  super_class: com.oracle.truffle.polyglot.PolyglotMap$Cache$PolyglotMapNode
{
  void <init>(com.oracle.truffle.polyglot.PolyglotMap$Cache);
    descriptor: (Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode this
        start local 1 // com.oracle.truffle.polyglot.PolyglotMap$Cache cache
         0: .line 550
            aload 0 /* this */
            aload 1 /* cache */
            invokespecial com.oracle.truffle.polyglot.PolyglotMap$Cache$PolyglotMapNode.<init>:(Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;)V
         1: .line 551
            return
        end local 1 // com.oracle.truffle.polyglot.PolyglotMap$Cache cache
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lcom/oracle/truffle/polyglot/PolyglotMap$Cache$GetNode;
            0    2     1  cache  Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;
    MethodParameters:
       Name  Flags
      cache  

  protected java.lang.String getOperationName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode this
         0: .line 555
            ldc "get"
            areturn
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/polyglot/PolyglotMap$Cache$GetNode;

  protected java.lang.Object doCached(com.oracle.truffle.polyglot.PolyglotLanguageContext, java.lang.Object, java.lang.Object[], com.oracle.truffle.api.interop.InteropLibrary, com.oracle.truffle.polyglot.ToHostNode, com.oracle.truffle.api.profiles.BranchProfile);
    descriptor: (Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;Ljava/lang/Object;[Ljava/lang/Object;Lcom/oracle/truffle/api/interop/InteropLibrary;Lcom/oracle/truffle/polyglot/ToHostNode;Lcom/oracle/truffle/api/profiles/BranchProfile;)Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=6, locals=9, args_size=7
        start local 0 // com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode this
        start local 1 // com.oracle.truffle.polyglot.PolyglotLanguageContext languageContext
        start local 2 // java.lang.Object receiver
        start local 3 // java.lang.Object[] args
        start local 4 // com.oracle.truffle.api.interop.InteropLibrary interop
        start local 5 // com.oracle.truffle.polyglot.ToHostNode toHost
        start local 6 // com.oracle.truffle.api.profiles.BranchProfile error
         0: .line 564
            aload 3 /* args */
            iconst_2
            aaload
            astore 7 /* key */
        start local 7 // java.lang.Object key
         1: .line 567
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode.cache:Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache.memberKey:Z
            ifeq 6
            aload 4 /* interop */
            aload 2 /* receiver */
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.hasMembers:(Ljava/lang/Object;)Z
            ifeq 6
         2: .line 568
            aload 0 /* this */
            aload 7 /* key */
            invokevirtual com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode.isObjectKey:(Ljava/lang/Object;)Z
            ifeq 5
         3: .line 569
            aload 4 /* interop */
            aload 2 /* receiver */
            aload 7 /* key */
            checkcast java.lang.String
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.readMember:(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;
            astore 8 /* result */
        start local 8 // java.lang.Object result
         4: .line 570
            goto 15
        end local 8 // java.lang.Object result
         5: .line 571
      StackMap locals: java.lang.Object
      StackMap stack:
            aconst_null
            areturn
         6: .line 573
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode.cache:Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache.numberKey:Z
            ifeq 11
            aload 4 /* interop */
            aload 2 /* receiver */
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.hasArrayElements:(Ljava/lang/Object;)Z
            ifeq 11
         7: .line 574
            aload 0 /* this */
            aload 7 /* key */
            invokevirtual com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode.isArrayKey:(Ljava/lang/Object;)Z
            ifeq 10
         8: .line 575
            aload 4 /* interop */
            aload 2 /* receiver */
            aload 7 /* key */
            invokestatic com.oracle.truffle.polyglot.PolyglotMap.intValue:(Ljava/lang/Object;)I
            i2l
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.readArrayElement:(Ljava/lang/Object;J)Ljava/lang/Object;
            astore 8 /* result */
        start local 8 // java.lang.Object result
         9: .line 576
            goto 15
        end local 8 // java.lang.Object result
        10: .line 577
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
        11: .line 580
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
        12: .line 582
      StackMap locals:
      StackMap stack: com.oracle.truffle.api.interop.InteropException
            pop
        13: .line 583
            aload 6 /* error */
            invokevirtual com.oracle.truffle.api.profiles.BranchProfile.enter:()V
        14: .line 584
            aconst_null
            areturn
        start local 8 // java.lang.Object result
        15: .line 586
      StackMap locals: java.lang.Object
      StackMap stack:
            aload 5 /* toHost */
            aload 8 /* result */
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode.cache:Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache.valueClass:Ljava/lang/Class;
            aload 0 /* this */
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode.cache:Lcom/oracle/truffle/polyglot/PolyglotMap$Cache;
            getfield com.oracle.truffle.polyglot.PolyglotMap$Cache.valueType:Ljava/lang/reflect/Type;
            aload 1 /* languageContext */
            iconst_1
            invokevirtual com.oracle.truffle.polyglot.ToHostNode.execute:(Ljava/lang/Object;Ljava/lang/Class;Ljava/lang/reflect/Type;Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;Z)Ljava/lang/Object;
            areturn
        end local 8 // java.lang.Object result
        end local 7 // java.lang.Object key
        end local 6 // com.oracle.truffle.api.profiles.BranchProfile error
        end local 5 // com.oracle.truffle.polyglot.ToHostNode toHost
        end local 4 // com.oracle.truffle.api.interop.InteropLibrary interop
        end local 3 // java.lang.Object[] args
        end local 2 // java.lang.Object receiver
        end local 1 // com.oracle.truffle.polyglot.PolyglotLanguageContext languageContext
        end local 0 // com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0   16     0             this  Lcom/oracle/truffle/polyglot/PolyglotMap$Cache$GetNode;
            0   16     1  languageContext  Lcom/oracle/truffle/polyglot/PolyglotLanguageContext;
            0   16     2         receiver  Ljava/lang/Object;
            0   16     3             args  [Ljava/lang/Object;
            0   16     4          interop  Lcom/oracle/truffle/api/interop/InteropLibrary;
            0   16     5           toHost  Lcom/oracle/truffle/polyglot/ToHostNode;
            0   16     6            error  Lcom/oracle/truffle/api/profiles/BranchProfile;
            1   16     7              key  Ljava/lang/Object;
            4    5     8           result  Ljava/lang/Object;
            9   10     8           result  Ljava/lang/Object;
           15   16     8           result  Ljava/lang/Object;
      Exception table:
        from    to  target  type
           1     5      12  Class com.oracle.truffle.api.interop.UnknownIdentifierException
           6    10      12  Class com.oracle.truffle.api.interop.UnknownIdentifierException
           1     5      12  Class com.oracle.truffle.api.interop.InvalidArrayIndexException
           6    10      12  Class com.oracle.truffle.api.interop.InvalidArrayIndexException
           1     5      12  Class com.oracle.truffle.api.interop.UnsupportedMessageException
           6    10      12  Class com.oracle.truffle.api.interop.UnsupportedMessageException
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.dsl.Specialization(limit = "LIMIT")
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
      2:
      3:
        com.oracle.truffle.api.library.CachedLibrary(value = "receiver")
      4:
        com.oracle.truffle.api.dsl.Cached()
      5:
        com.oracle.truffle.api.dsl.Cached()
    MethodParameters:
                 Name  Flags
      languageContext  
      receiver         
      args             
      interop          
      toHost           
      error            
}
SourceFile: "PolyglotMap.java"
NestHost: com.oracle.truffle.polyglot.PolyglotMap
InnerClasses:
  final Cache = com.oracle.truffle.polyglot.PolyglotMap$Cache of com.oracle.truffle.polyglot.PolyglotMap
  abstract GetNode = com.oracle.truffle.polyglot.PolyglotMap$Cache$GetNode of com.oracle.truffle.polyglot.PolyglotMap$Cache
  abstract PolyglotMapNode = com.oracle.truffle.polyglot.PolyglotMap$Cache$PolyglotMapNode of com.oracle.truffle.polyglot.PolyglotMap$Cache