https://www.graalvm.org/ 
interface com.oracle.truffle.tools.dap.test.DAPSessionHandler
  minor version: 0
  major version: 59
  flags: flags: (0x0600) ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.oracle.truffle.tools.dap.test.DAPSessionHandler
  super_class: java.lang.Object
{
  public abstract java.io.OutputStream getOutputStream();
    descriptor: ()Ljava/io/OutputStream;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract java.io.InputStream getInputStream();
    descriptor: ()Ljava/io/InputStream;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "DAPTestInstrument.java"