https://openjdk.java.net/ 
public interface com.sun.source.doctree.ErroneousTree extends com.sun.source.doctree.TextTree
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.source.doctree.ErroneousTree
  super_class: java.lang.Object
{
  public abstract javax.tools.Diagnostic<javax.tools.JavaFileObject> getDiagnostic();
    descriptor: ()Ljavax/tools/Diagnostic;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljavax/tools/Diagnostic<Ljavax/tools/JavaFileObject;>;
}
SourceFile: "ErroneousTree.java"