https://www.graalvm.org/ 
public final class com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode extends com.oracle.truffle.sl.nodes.SLExpressionNode
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode
  super_class: com.oracle.truffle.sl.nodes.SLExpressionNode
{
  private final java.lang.String functionName;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private com.oracle.truffle.sl.runtime.SLFunction cachedFunction;
    descriptor: Lcom/oracle/truffle/sl/runtime/SLFunction;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.CompilerDirectives$CompilationFinal()

  private com.oracle.truffle.api.TruffleLanguage$ContextReference<com.oracle.truffle.sl.runtime.SLContext> contextRef;
    descriptor: Lcom/oracle/truffle/api/TruffleLanguage$ContextReference;
    flags: (0x0002) ACC_PRIVATE
    Signature: Lcom/oracle/truffle/api/TruffleLanguage$ContextReference<Lcom/oracle/truffle/sl/runtime/SLContext;>;
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.CompilerDirectives$CompilationFinal()

  private com.oracle.truffle.sl.SLLanguage language;
    descriptor: Lcom/oracle/truffle/sl/SLLanguage;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.CompilerDirectives$CompilationFinal()

  public void <init>(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode this
        start local 1 // java.lang.String functionName
         0: .line 90
            aload 0 /* this */
            invokespecial com.oracle.truffle.sl.nodes.SLExpressionNode.<init>:()V
         1: .line 91
            aload 0 /* this */
            aload 1 /* functionName */
            putfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.functionName:Ljava/lang/String;
         2: .line 92
            return
        end local 1 // java.lang.String functionName
        end local 0 // com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    3     0          this  Lcom/oracle/truffle/sl/nodes/expression/SLFunctionLiteralNode;
            0    3     1  functionName  Ljava/lang/String;
    MethodParameters:
              Name  Flags
      functionName  

  public com.oracle.truffle.sl.runtime.SLFunction executeGeneric(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Lcom/oracle/truffle/sl/runtime/SLFunction;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=5, args_size=2
        start local 0 // com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode this
        start local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
         0: .line 96
            aload 0 /* this */
            getfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.contextRef:Lcom/oracle/truffle/api/TruffleLanguage$ContextReference;
            astore 2 /* contextReference */
        start local 2 // com.oracle.truffle.api.TruffleLanguage$ContextReference contextReference
         1: .line 97
            aload 2 /* contextReference */
            ifnonnull 4
         2: .line 98
            invokestatic com.oracle.truffle.api.CompilerDirectives.transferToInterpreterAndInvalidate:()V
         3: .line 99
            aload 0 /* this */
            aload 0 /* this */
            ldc Lcom/oracle/truffle/sl/SLLanguage;
            invokevirtual com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.lookupContextReference:(Ljava/lang/Class;)Lcom/oracle/truffle/api/TruffleLanguage$ContextReference;
            dup_x1
            putfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.contextRef:Lcom/oracle/truffle/api/TruffleLanguage$ContextReference;
            astore 2 /* contextReference */
         4: .line 101
      StackMap locals: com.oracle.truffle.api.TruffleLanguage$ContextReference
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.language:Lcom/oracle/truffle/sl/SLLanguage;
            astore 3 /* l */
        start local 3 // com.oracle.truffle.sl.SLLanguage l
         5: .line 102
            aload 3 /* l */
            ifnonnull 8
         6: .line 103
            invokestatic com.oracle.truffle.api.CompilerDirectives.transferToInterpreterAndInvalidate:()V
         7: .line 104
            aload 0 /* this */
            aload 0 /* this */
            ldc Lcom/oracle/truffle/sl/SLLanguage;
            invokevirtual com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.lookupLanguageReference:(Ljava/lang/Class;)Lcom/oracle/truffle/api/TruffleLanguage$LanguageReference;
            invokevirtual com.oracle.truffle.api.TruffleLanguage$LanguageReference.get:()Lcom/oracle/truffle/api/TruffleLanguage;
            checkcast com.oracle.truffle.sl.SLLanguage
            dup_x1
            putfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.language:Lcom/oracle/truffle/sl/SLLanguage;
            astore 3 /* l */
         8: .line 106
      StackMap locals: com.oracle.truffle.sl.SLLanguage
      StackMap stack:
            aload 3 /* l */
            invokestatic com.oracle.truffle.api.CompilerAsserts.partialEvaluationConstant:(Ljava/lang/Object;)V
         9: .line 109
            aload 3 /* l */
            invokevirtual com.oracle.truffle.sl.SLLanguage.isSingleContext:()Z
            ifeq 15
        10: .line 110
            aload 0 /* this */
            getfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.cachedFunction:Lcom/oracle/truffle/sl/runtime/SLFunction;
            astore 4 /* function */
        start local 4 // com.oracle.truffle.sl.runtime.SLFunction function
        11: .line 111
            aload 4 /* function */
            ifnonnull 19
        12: .line 113
            invokestatic com.oracle.truffle.api.CompilerDirectives.transferToInterpreterAndInvalidate:()V
        13: .line 115
            aload 0 /* this */
            aload 2 /* contextReference */
            invokevirtual com.oracle.truffle.api.TruffleLanguage$ContextReference.get:()Ljava/lang/Object;
            checkcast com.oracle.truffle.sl.runtime.SLContext
            invokevirtual com.oracle.truffle.sl.runtime.SLContext.getFunctionRegistry:()Lcom/oracle/truffle/sl/runtime/SLFunctionRegistry;
            aload 0 /* this */
            getfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.functionName:Ljava/lang/String;
            iconst_1
            invokevirtual com.oracle.truffle.sl.runtime.SLFunctionRegistry.lookup:(Ljava/lang/String;Z)Lcom/oracle/truffle/sl/runtime/SLFunction;
            dup
            astore 4 /* function */
            putfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.cachedFunction:Lcom/oracle/truffle/sl/runtime/SLFunction;
        14: .line 117
            goto 19
        end local 4 // com.oracle.truffle.sl.runtime.SLFunction function
        15: .line 121
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.cachedFunction:Lcom/oracle/truffle/sl/runtime/SLFunction;
            ifnull 18
        16: .line 122
            invokestatic com.oracle.truffle.api.CompilerDirectives.transferToInterpreterAndInvalidate:()V
        17: .line 123
            aload 0 /* this */
            aconst_null
            putfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.cachedFunction:Lcom/oracle/truffle/sl/runtime/SLFunction;
        18: .line 127
      StackMap locals:
      StackMap stack:
            aload 2 /* contextReference */
            invokevirtual com.oracle.truffle.api.TruffleLanguage$ContextReference.get:()Ljava/lang/Object;
            checkcast com.oracle.truffle.sl.runtime.SLContext
            invokevirtual com.oracle.truffle.sl.runtime.SLContext.getFunctionRegistry:()Lcom/oracle/truffle/sl/runtime/SLFunctionRegistry;
            aload 0 /* this */
            getfield com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.functionName:Ljava/lang/String;
            iconst_1
            invokevirtual com.oracle.truffle.sl.runtime.SLFunctionRegistry.lookup:(Ljava/lang/String;Z)Lcom/oracle/truffle/sl/runtime/SLFunction;
            astore 4 /* function */
        start local 4 // com.oracle.truffle.sl.runtime.SLFunction function
        19: .line 129
      StackMap locals: com.oracle.truffle.sl.runtime.SLFunction
      StackMap stack:
            aload 4 /* function */
            areturn
        end local 4 // com.oracle.truffle.sl.runtime.SLFunction function
        end local 3 // com.oracle.truffle.sl.SLLanguage l
        end local 2 // com.oracle.truffle.api.TruffleLanguage$ContextReference contextReference
        end local 1 // com.oracle.truffle.api.frame.VirtualFrame frame
        end local 0 // com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode this
      LocalVariableTable:
        Start  End  Slot              Name  Signature
            0   20     0              this  Lcom/oracle/truffle/sl/nodes/expression/SLFunctionLiteralNode;
            0   20     1             frame  Lcom/oracle/truffle/api/frame/VirtualFrame;
            1   20     2  contextReference  Lcom/oracle/truffle/api/TruffleLanguage$ContextReference<Lcom/oracle/truffle/sl/runtime/SLContext;>;
            5   20     3                 l  Lcom/oracle/truffle/sl/SLLanguage;
           11   15     4          function  Lcom/oracle/truffle/sl/runtime/SLFunction;
           19   20     4          function  Lcom/oracle/truffle/sl/runtime/SLFunction;
    MethodParameters:
       Name  Flags
      frame  

  public java.lang.Object executeGeneric(com.oracle.truffle.api.frame.VirtualFrame);
    descriptor: (Lcom/oracle/truffle/api/frame/VirtualFrame;)Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            invokevirtual com.oracle.truffle.sl.nodes.expression.SLFunctionLiteralNode.executeGeneric:(Lcom/oracle/truffle/api/frame/VirtualFrame;)Lcom/oracle/truffle/sl/runtime/SLFunction;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "SLFunctionLiteralNode.java"
InnerClasses:
  public abstract CompilationFinal = com.oracle.truffle.api.CompilerDirectives$CompilationFinal of com.oracle.truffle.api.CompilerDirectives
  public abstract ContextReference = com.oracle.truffle.api.TruffleLanguage$ContextReference of com.oracle.truffle.api.TruffleLanguage
  public abstract LanguageReference = com.oracle.truffle.api.TruffleLanguage$LanguageReference of com.oracle.truffle.api.TruffleLanguage
    RuntimeVisibleAnnotations: 
      com.oracle.truffle.api.nodes.NodeInfo(shortName = "func")