https://www.graalvm.org/ 
public interface com.oracle.truffle.llvm.runtime.ToolchainConfig extends com.oracle.truffle.llvm.runtime.config.LLVMCapability
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.llvm.runtime.ToolchainConfig
  super_class: java.lang.Object
{
  public abstract java.lang.String getToolchainRootOverride();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract java.lang.String getToolchainSubdir();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract boolean enableCXX();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "ToolchainConfig.java"