https://www.graalvm.org/ 
class com.oracle.svm.truffle.api.SubstrateTruffleOptions
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.oracle.svm.truffle.api.SubstrateTruffleOptions
  super_class: java.lang.Object
{
  static final com.oracle.svm.core.option.HostedOptionKey<java.lang.Boolean> TruffleMultiThreaded;
    descriptor: Lcom/oracle/svm/core/option/HostedOptionKey;
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    Signature: Lcom/oracle/svm/core/option/HostedOptionKey<Ljava/lang/Boolean;>;
    RuntimeInvisibleAnnotations: 
      org.graalvm.compiler.options.Option(help = {"Enable support for Truffle background compilation"})

  static final com.oracle.svm.core.option.HostedOptionKey<java.lang.Boolean> TrufflePropagateCompilationErrors;
    descriptor: Lcom/oracle/svm/core/option/HostedOptionKey;
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    Signature: Lcom/oracle/svm/core/option/HostedOptionKey<Ljava/lang/Boolean;>;
    RuntimeInvisibleAnnotations: 
      org.graalvm.compiler.options.Option(help = {"Propagate Truffle compilation errors"})

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 76
            new com.oracle.svm.core.option.HostedOptionKey
            dup
            iconst_1
            invokestatic java.lang.Boolean.valueOf:(Z)Ljava/lang/Boolean;
            invokespecial com.oracle.svm.core.option.HostedOptionKey.<init>:(Ljava/lang/Object;)V
            putstatic com.oracle.svm.truffle.api.SubstrateTruffleOptions.TruffleMultiThreaded:Lcom/oracle/svm/core/option/HostedOptionKey;
         1: .line 79
            new com.oracle.svm.core.option.HostedOptionKey
            dup
            iconst_0
            invokestatic java.lang.Boolean.valueOf:(Z)Ljava/lang/Boolean;
            invokespecial com.oracle.svm.core.option.HostedOptionKey.<init>:(Ljava/lang/Object;)V
            putstatic com.oracle.svm.truffle.api.SubstrateTruffleOptions.TrufflePropagateCompilationErrors:Lcom/oracle/svm/core/option/HostedOptionKey;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.svm.truffle.api.SubstrateTruffleOptions this
         0: .line 73
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.svm.truffle.api.SubstrateTruffleOptions this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/svm/truffle/api/SubstrateTruffleOptions;

  static boolean isMultiThreaded();
    descriptor: ()Z
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 89
            getstatic com.oracle.svm.core.SubstrateOptions.MultiThreaded:Lcom/oracle/svm/core/option/HostedOptionKey;
            invokevirtual com.oracle.svm.core.option.HostedOptionKey.getValue:()Ljava/lang/Object;
            checkcast java.lang.Boolean
            invokevirtual java.lang.Boolean.booleanValue:()Z
            ifeq 1
            getstatic com.oracle.svm.truffle.api.SubstrateTruffleOptions.TruffleMultiThreaded:Lcom/oracle/svm/core/option/HostedOptionKey;
            invokevirtual com.oracle.svm.core.option.HostedOptionKey.getValue:()Ljava/lang/Object;
            checkcast java.lang.Boolean
            invokevirtual java.lang.Boolean.booleanValue:()Z
            ifeq 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    RuntimeVisibleAnnotations: 
      org.graalvm.compiler.api.replacements.Fold()
}
SourceFile: "SubstrateTruffleRuntime.java"