https://openjdk.java.net/ 
public interface org.w3c.dom.DOMImplementationList
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.w3c.dom.DOMImplementationList
  super_class: java.lang.Object
{
  public abstract org.w3c.dom.DOMImplementation item(int);
    descriptor: (I)Lorg/w3c/dom/DOMImplementation;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      index  

  public abstract int getLength();
    descriptor: ()I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "DOMImplementationList.java"