https://www.graalvm.org/ 
class com.oracle.truffle.api.TruffleLanguageSnippets$Context
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.truffle.api.TruffleLanguageSnippets$Context
  super_class: java.lang.Object
{
  java.lang.String[] args;
    descriptor: [Ljava/lang/String;
    flags: (0x0000) 

  com.oracle.truffle.api.TruffleLanguage$Env env;
    descriptor: Lcom/oracle/truffle/api/TruffleLanguage$Env;
    flags: (0x0000) 

  com.oracle.truffle.api.CallTarget mul;
    descriptor: Lcom/oracle/truffle/api/CallTarget;
    flags: (0x0000) 

  java.io.InputStream in;
    descriptor: Ljava/io/InputStream;
    flags: (0x0000) 

  java.io.OutputStream out;
    descriptor: Ljava/io/OutputStream;
    flags: (0x0000) 

  java.io.OutputStream err;
    descriptor: Ljava/io/OutputStream;
    flags: (0x0000) 

  java.lang.String languageVersion;
    descriptor: Ljava/lang/String;
    flags: (0x0000) 

  final com.oracle.truffle.api.Assumption singleThreaded;
    descriptor: Lcom/oracle/truffle/api/Assumption;
    flags: (0x0010) ACC_FINAL

  final java.util.List<java.lang.Thread> startedThreads;
    descriptor: Ljava/util/List;
    flags: (0x0010) ACC_FINAL
    Signature: Ljava/util/List<Ljava/lang/Thread;>;

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

  void <init>(com.oracle.truffle.api.TruffleLanguageSnippets, java.lang.String[]);
    descriptor: (Lcom/oracle/truffle/api/TruffleLanguageSnippets;[Ljava/lang/String;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
        start local 2 // java.lang.String[] args
         0: .line 3648
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.this$0:Lcom/oracle/truffle/api/TruffleLanguageSnippets;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 3670
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            invokeinterface com.oracle.truffle.api.TruffleRuntime.createAssumption:()Lcom/oracle/truffle/api/Assumption;
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.singleThreaded:Lcom/oracle/truffle/api/Assumption;
         2: .line 3671
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.startedThreads:Ljava/util/List;
         3: .line 3649
            aload 0 /* this */
            aload 2 /* args */
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.args:[Ljava/lang/String;
         4: .line 3650
            aload 0 /* this */
            aconst_null
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.env:Lcom/oracle/truffle/api/TruffleLanguage$Env;
         5: .line 3651
            aload 0 /* this */
            aconst_null
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.languageVersion:Ljava/lang/String;
         6: .line 3652
            return
        end local 2 // java.lang.String[] args
        end local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lcom/oracle/truffle/api/TruffleLanguageSnippets$Context;
            0    7     2  args  [Ljava/lang/String;
    MethodParameters:
        Name  Flags
      this$0  final
      args    

  void <init>(com.oracle.truffle.api.TruffleLanguageSnippets, com.oracle.truffle.api.TruffleLanguage$Env);
    descriptor: (Lcom/oracle/truffle/api/TruffleLanguageSnippets;Lcom/oracle/truffle/api/TruffleLanguage$Env;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
        start local 2 // com.oracle.truffle.api.TruffleLanguage$Env env
         0: .line 3654
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.this$0:Lcom/oracle/truffle/api/TruffleLanguageSnippets;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 3670
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            invokeinterface com.oracle.truffle.api.TruffleRuntime.createAssumption:()Lcom/oracle/truffle/api/Assumption;
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.singleThreaded:Lcom/oracle/truffle/api/Assumption;
         2: .line 3671
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.startedThreads:Ljava/util/List;
         3: .line 3655
            aload 0 /* this */
            aload 2 /* env */
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.env:Lcom/oracle/truffle/api/TruffleLanguage$Env;
         4: .line 3656
            aload 0 /* this */
            aconst_null
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.args:[Ljava/lang/String;
         5: .line 3657
            aload 0 /* this */
            aconst_null
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.languageVersion:Ljava/lang/String;
         6: .line 3658
            return
        end local 2 // com.oracle.truffle.api.TruffleLanguage$Env env
        end local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lcom/oracle/truffle/api/TruffleLanguageSnippets$Context;
            0    7     2   env  Lcom/oracle/truffle/api/TruffleLanguage$Env;
    MethodParameters:
        Name  Flags
      this$0  final
      env     

  void <init>(com.oracle.truffle.api.TruffleLanguageSnippets, com.oracle.truffle.api.TruffleLanguage$Env, java.lang.String);
    descriptor: (Lcom/oracle/truffle/api/TruffleLanguageSnippets;Lcom/oracle/truffle/api/TruffleLanguage$Env;Ljava/lang/String;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
        start local 2 // com.oracle.truffle.api.TruffleLanguage$Env env
        start local 3 // java.lang.String languageVersion
         0: .line 3660
            aload 0 /* this */
            aload 1
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.this$0:Lcom/oracle/truffle/api/TruffleLanguageSnippets;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 3670
            aload 0 /* this */
            invokestatic com.oracle.truffle.api.Truffle.getRuntime:()Lcom/oracle/truffle/api/TruffleRuntime;
            invokeinterface com.oracle.truffle.api.TruffleRuntime.createAssumption:()Lcom/oracle/truffle/api/Assumption;
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.singleThreaded:Lcom/oracle/truffle/api/Assumption;
         2: .line 3671
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.startedThreads:Ljava/util/List;
         3: .line 3661
            aload 0 /* this */
            aload 2 /* env */
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.env:Lcom/oracle/truffle/api/TruffleLanguage$Env;
         4: .line 3662
            aload 0 /* this */
            aconst_null
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.args:[Ljava/lang/String;
         5: .line 3663
            aload 0 /* this */
            aload 3 /* languageVersion */
            putfield com.oracle.truffle.api.TruffleLanguageSnippets$Context.languageVersion:Ljava/lang/String;
         6: .line 3664
            return
        end local 3 // java.lang.String languageVersion
        end local 2 // com.oracle.truffle.api.TruffleLanguage$Env env
        end local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    7     0             this  Lcom/oracle/truffle/api/TruffleLanguageSnippets$Context;
            0    7     2              env  Lcom/oracle/truffle/api/TruffleLanguage$Env;
            0    7     3  languageVersion  Ljava/lang/String;
    MethodParameters:
                 Name  Flags
      this$0           final
      env              
      languageVersion  

  com.oracle.truffle.api.TruffleLanguageSnippets$Context fork();
    descriptor: ()Lcom/oracle/truffle/api/TruffleLanguageSnippets$Context;
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
         0: .line 3667
            aconst_null
            areturn
        end local 0 // com.oracle.truffle.api.TruffleLanguageSnippets$Context this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/api/TruffleLanguageSnippets$Context;
}
SourceFile: "TruffleLanguage.java"
NestHost: com.oracle.truffle.api.TruffleLanguageSnippets
InnerClasses:
  public final Env = com.oracle.truffle.api.TruffleLanguage$Env of com.oracle.truffle.api.TruffleLanguage
  Context = com.oracle.truffle.api.TruffleLanguageSnippets$Context of com.oracle.truffle.api.TruffleLanguageSnippets