https://openjdk.java.net/ 
public interface com.sun.org.apache.xerces.internal.xni.parser.XMLDTDSource
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.org.apache.xerces.internal.xni.parser.XMLDTDSource
  super_class: java.lang.Object
{
  public abstract void setDTDHandler(com.sun.org.apache.xerces.internal.xni.XMLDTDHandler);
    descriptor: (Lcom/sun/org/apache/xerces/internal/xni/XMLDTDHandler;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
         Name  Flags
      handler  

  public abstract com.sun.org.apache.xerces.internal.xni.XMLDTDHandler getDTDHandler();
    descriptor: ()Lcom/sun/org/apache/xerces/internal/xni/XMLDTDHandler;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "XMLDTDSource.java"