https://www.graalvm.org/ 
public interface com.oracle.truffle.regex.RegexCompiler
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.regex.RegexCompiler
  super_class: java.lang.Object
{
  public abstract java.lang.Object compile(com.oracle.truffle.regex.RegexSource);
    descriptor: (Lcom/oracle/truffle/regex/RegexSource;)Ljava/lang/Object;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws com.oracle.truffle.regex.RegexSyntaxException, com.oracle.truffle.regex.UnsupportedRegexException
    MethodParameters:
        Name  Flags
      source  
}
SourceFile: "RegexCompiler.java"