https://www.graalvm.org/ 
final class com.oracle.truffle.nfi.NFISymbol implements com.oracle.truffle.api.interop.TruffleObject
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.nfi.NFISymbol
  super_class: java.lang.Object
{
  final java.lang.String backend;
    descriptor: Ljava/lang/String;
    flags: (0x0010) ACC_FINAL

  final java.lang.Object nativeSymbol;
    descriptor: Ljava/lang/Object;
    flags: (0x0010) ACC_FINAL

  final java.lang.Object signature;
    descriptor: Ljava/lang/Object;
    flags: (0x0010) ACC_FINAL

  private static final java.lang.Object NO_SIGNATURE;
    descriptor: Ljava/lang/Object;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  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=2, locals=0, args_size=0
         0: .line 61
            ldc Lcom/oracle/truffle/nfi/NFISymbol;
            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.nfi.NFISymbol.$assertionsDisabled:Z
         3: .line 75
            new java.lang.Object
            dup
            invokespecial java.lang.Object.<init>:()V
            putstatic com.oracle.truffle.nfi.NFISymbol.NO_SIGNATURE:Ljava/lang/Object;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  static java.lang.Object createBindable(java.lang.String, java.lang.Object);
    descriptor: (Ljava/lang/String;Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=5, locals=2, args_size=2
        start local 0 // java.lang.String backend
        start local 1 // java.lang.Object nativeSymbol
         0: .line 64
            new com.oracle.truffle.nfi.NFISymbol
            dup
            aload 0 /* backend */
            aload 1 /* nativeSymbol */
            getstatic com.oracle.truffle.nfi.NFISymbol.NO_SIGNATURE:Ljava/lang/Object;
            invokespecial com.oracle.truffle.nfi.NFISymbol.<init>:(Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
            areturn
        end local 1 // java.lang.Object nativeSymbol
        end local 0 // java.lang.String backend
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    1     0       backend  Ljava/lang/String;
            0    1     1  nativeSymbol  Ljava/lang/Object;
    MethodParameters:
              Name  Flags
      backend       
      nativeSymbol  

  static java.lang.Object createBound(java.lang.String, java.lang.Object, java.lang.Object);
    descriptor: (Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=5, locals=3, args_size=3
        start local 0 // java.lang.String backend
        start local 1 // java.lang.Object nativeSymbol
        start local 2 // java.lang.Object signature
         0: .line 68
            new com.oracle.truffle.nfi.NFISymbol
            dup
            aload 0 /* backend */
            aload 1 /* nativeSymbol */
            aload 2 /* signature */
            invokespecial com.oracle.truffle.nfi.NFISymbol.<init>:(Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
            areturn
        end local 2 // java.lang.Object signature
        end local 1 // java.lang.Object nativeSymbol
        end local 0 // java.lang.String backend
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    1     0       backend  Ljava/lang/String;
            0    1     1  nativeSymbol  Ljava/lang/Object;
            0    1     2     signature  Ljava/lang/Object;
    MethodParameters:
              Name  Flags
      backend       
      nativeSymbol  
      signature     

  private void <init>(java.lang.String, java.lang.Object, java.lang.Object);
    descriptor: (Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=4, args_size=4
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // java.lang.String backend
        start local 2 // java.lang.Object nativeSymbol
        start local 3 // java.lang.Object signature
         0: .line 77
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 78
            getstatic com.oracle.truffle.nfi.NFISymbol.$assertionsDisabled:Z
            ifne 2
            aload 3 /* signature */
            ifnonnull 2
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         2: .line 79
      StackMap locals: com.oracle.truffle.nfi.NFISymbol java.lang.String java.lang.Object java.lang.Object
      StackMap stack:
            aload 0 /* this */
            aload 1 /* backend */
            putfield com.oracle.truffle.nfi.NFISymbol.backend:Ljava/lang/String;
         3: .line 80
            aload 0 /* this */
            aload 2 /* nativeSymbol */
            putfield com.oracle.truffle.nfi.NFISymbol.nativeSymbol:Ljava/lang/Object;
         4: .line 81
            aload 0 /* this */
            aload 3 /* signature */
            putfield com.oracle.truffle.nfi.NFISymbol.signature:Ljava/lang/Object;
         5: .line 82
            return
        end local 3 // java.lang.Object signature
        end local 2 // java.lang.Object nativeSymbol
        end local 1 // java.lang.String backend
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    6     0          this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    6     1       backend  Ljava/lang/String;
            0    6     2  nativeSymbol  Ljava/lang/Object;
            0    6     3     signature  Ljava/lang/Object;
    MethodParameters:
              Name  Flags
      backend       
      nativeSymbol  
      signature     

  boolean isExecutable();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
         0: .line 88
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.NFISymbol.signature:Ljava/lang/Object;
            getstatic com.oracle.truffle.nfi.NFISymbol.NO_SIGNATURE:Ljava/lang/Object;
            if_acmpeq 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lcom/oracle/truffle/nfi/NFISymbol;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()

  boolean hasMembers();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
         0: .line 112
            iconst_1
            ireturn
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/nfi/NFISymbol;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()

  java.lang.Object getMembers(boolean);
    descriptor: (Z)Ljava/lang/Object;
    flags: (0x0000) 
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // boolean includeInternal
         0: .line 118
            new com.oracle.truffle.nfi.NFILibrary$Keys
            dup
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            ldc "bind"
            aastore
            invokespecial com.oracle.truffle.nfi.NFILibrary$Keys.<init>:([Ljava/lang/Object;)V
            areturn
        end local 1 // boolean includeInternal
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    1     0             this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    1     1  includeInternal  Z
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    MethodParameters:
                 Name  Flags
      includeInternal  

  boolean isMemberInvocable(java.lang.String);
    descriptor: (Ljava/lang/String;)Z
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // java.lang.String member
         0: .line 124
            ldc "bind"
            aload 1 /* member */
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ireturn
        end local 1 // java.lang.String member
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    1     1  member  Ljava/lang/String;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    MethodParameters:
        Name  Flags
      member  

  java.lang.Object invokeMember(java.lang.String, java.lang.Object[], com.oracle.truffle.nfi.BindSignatureNode, com.oracle.truffle.api.profiles.BranchProfile);
    descriptor: (Ljava/lang/String;[Ljava/lang/Object;Lcom/oracle/truffle/nfi/BindSignatureNode;Lcom/oracle/truffle/api/profiles/BranchProfile;)Ljava/lang/Object;
    flags: (0x0000) 
    Code:
      stack=4, locals=5, args_size=5
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // java.lang.String member
        start local 2 // java.lang.Object[] args
        start local 3 // com.oracle.truffle.nfi.BindSignatureNode bind
        start local 4 // com.oracle.truffle.api.profiles.BranchProfile exception
         0: .line 131
            ldc "bind"
            aload 1 /* member */
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 3
         1: .line 132
            aload 4 /* exception */
            invokevirtual com.oracle.truffle.api.profiles.BranchProfile.enter:()V
         2: .line 133
            aload 1 /* member */
            invokestatic com.oracle.truffle.api.interop.UnknownIdentifierException.create:(Ljava/lang/String;)Lcom/oracle/truffle/api/interop/UnknownIdentifierException;
            athrow
         3: .line 135
      StackMap locals:
      StackMap stack:
            aload 2 /* args */
            arraylength
            iconst_1
            if_icmpeq 6
         4: .line 136
            aload 4 /* exception */
            invokevirtual com.oracle.truffle.api.profiles.BranchProfile.enter:()V
         5: .line 137
            iconst_1
            aload 2 /* args */
            arraylength
            invokestatic com.oracle.truffle.api.interop.ArityException.create:(II)Lcom/oracle/truffle/api/interop/ArityException;
            athrow
         6: .line 140
      StackMap locals:
      StackMap stack:
            aload 3 /* bind */
            aload 0 /* this */
            aload 2 /* args */
            iconst_0
            aaload
            invokevirtual com.oracle.truffle.nfi.BindSignatureNode.execute:(Lcom/oracle/truffle/nfi/NFISymbol;Ljava/lang/Object;)Ljava/lang/Object;
            areturn
        end local 4 // com.oracle.truffle.api.profiles.BranchProfile exception
        end local 3 // com.oracle.truffle.nfi.BindSignatureNode bind
        end local 2 // java.lang.Object[] args
        end local 1 // java.lang.String member
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    7     0       this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    7     1     member  Ljava/lang/String;
            0    7     2       args  [Ljava/lang/Object;
            0    7     3       bind  Lcom/oracle/truffle/nfi/BindSignatureNode;
            0    7     4  exception  Lcom/oracle/truffle/api/profiles/BranchProfile;
    Exceptions:
      throws com.oracle.truffle.api.interop.ArityException, com.oracle.truffle.api.interop.UnknownIdentifierException, com.oracle.truffle.api.interop.UnsupportedTypeException, com.oracle.truffle.api.interop.UnsupportedMessageException
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    RuntimeInvisibleParameterAnnotations: 
      0:
      1:
      2:
        com.oracle.truffle.api.dsl.Cached()
      3:
        com.oracle.truffle.api.dsl.Cached$Exclusive()
        com.oracle.truffle.api.dsl.Cached()
    MethodParameters:
           Name  Flags
      member     
      args       
      bind       
      exception  

  boolean isNull(com.oracle.truffle.api.interop.InteropLibrary);
    descriptor: (Lcom/oracle/truffle/api/interop/InteropLibrary;)Z
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // com.oracle.truffle.api.interop.InteropLibrary library
         0: .line 147
            aload 1 /* library */
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.NFISymbol.nativeSymbol:Ljava/lang/Object;
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.isNull:(Ljava/lang/Object;)Z
            ireturn
        end local 1 // com.oracle.truffle.api.interop.InteropLibrary library
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    1     1  library  Lcom/oracle/truffle/api/interop/InteropLibrary;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    RuntimeInvisibleParameterAnnotations: 
      0:
        com.oracle.truffle.api.library.CachedLibrary(value = "this.nativeSymbol")
    MethodParameters:
         Name  Flags
      library  

  boolean isPointer(com.oracle.truffle.api.interop.InteropLibrary);
    descriptor: (Lcom/oracle/truffle/api/interop/InteropLibrary;)Z
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // com.oracle.truffle.api.interop.InteropLibrary library
         0: .line 152
            aload 1 /* library */
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.NFISymbol.nativeSymbol:Ljava/lang/Object;
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.isPointer:(Ljava/lang/Object;)Z
            ireturn
        end local 1 // com.oracle.truffle.api.interop.InteropLibrary library
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    1     1  library  Lcom/oracle/truffle/api/interop/InteropLibrary;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    RuntimeInvisibleParameterAnnotations: 
      0:
        com.oracle.truffle.api.library.CachedLibrary(value = "this.nativeSymbol")
    MethodParameters:
         Name  Flags
      library  

  long asPointer(com.oracle.truffle.api.interop.InteropLibrary);
    descriptor: (Lcom/oracle/truffle/api/interop/InteropLibrary;)J
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // com.oracle.truffle.api.interop.InteropLibrary library
         0: .line 157
            aload 1 /* library */
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.NFISymbol.nativeSymbol:Ljava/lang/Object;
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.asPointer:(Ljava/lang/Object;)J
            lreturn
        end local 1 // com.oracle.truffle.api.interop.InteropLibrary library
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    1     1  library  Lcom/oracle/truffle/api/interop/InteropLibrary;
    Exceptions:
      throws com.oracle.truffle.api.interop.UnsupportedMessageException
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    RuntimeInvisibleParameterAnnotations: 
      0:
        com.oracle.truffle.api.library.CachedLibrary(value = "this.nativeSymbol")
    MethodParameters:
         Name  Flags
      library  

  void toNative(com.oracle.truffle.api.interop.InteropLibrary);
    descriptor: (Lcom/oracle/truffle/api/interop/InteropLibrary;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // com.oracle.truffle.api.interop.InteropLibrary library
         0: .line 162
            aload 1 /* library */
            aload 0 /* this */
            getfield com.oracle.truffle.nfi.NFISymbol.nativeSymbol:Ljava/lang/Object;
            invokevirtual com.oracle.truffle.api.interop.InteropLibrary.toNative:(Ljava/lang/Object;)V
         1: .line 163
            return
        end local 1 // com.oracle.truffle.api.interop.InteropLibrary library
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    2     1  library  Lcom/oracle/truffle/api/interop/InteropLibrary;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    RuntimeInvisibleParameterAnnotations: 
      0:
        com.oracle.truffle.api.library.CachedLibrary(value = "this.nativeSymbol")
    MethodParameters:
         Name  Flags
      library  

  boolean hasLanguage();
    descriptor: ()Z
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
         0: .line 168
            iconst_1
            ireturn
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/nfi/NFISymbol;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()

  java.lang.Class<? extends com.oracle.truffle.api.TruffleLanguage<?>> getLanguage();
    descriptor: ()Ljava/lang/Class;
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
         0: .line 174
            ldc Lcom/oracle/truffle/nfi/NFILanguage;
            areturn
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/nfi/NFISymbol;
    Signature: ()Ljava/lang/Class<+Lcom/oracle/truffle/api/TruffleLanguage<*>;>;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()

  java.lang.Object toDisplayString(boolean);
    descriptor: (Z)Ljava/lang/Object;
    flags: (0x0000) 
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // com.oracle.truffle.nfi.NFISymbol this
        start local 1 // boolean allowSideEffects
         0: .line 180
            ldc "Native Symbol"
            areturn
        end local 1 // boolean allowSideEffects
        end local 0 // com.oracle.truffle.nfi.NFISymbol this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0    1     0              this  Lcom/oracle/truffle/nfi/NFISymbol;
            0    1     1  allowSideEffects  Z
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportMessage()
    MethodParameters:
                  Name  Flags
      allowSideEffects  
}
SourceFile: "NFISymbol.java"
NestMembers:
  com.oracle.truffle.nfi.NFISymbol$Execute
InnerClasses:
  public abstract Exclusive = com.oracle.truffle.api.dsl.Cached$Exclusive of com.oracle.truffle.api.dsl.Cached
  final Keys = com.oracle.truffle.nfi.NFILibrary$Keys of com.oracle.truffle.nfi.NFILibrary
  Execute = com.oracle.truffle.nfi.NFISymbol$Execute of com.oracle.truffle.nfi.NFISymbol
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.library.ExportLibrary(value = Lcom/oracle/truffle/api/interop/InteropLibrary;)