https://openjdk.java.net/ 
public interface com.sun.xml.internal.bind.v2.runtime.unmarshaller.AttributesEx extends org.xml.sax.Attributes
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: com.sun.xml.internal.bind.v2.runtime.unmarshaller.AttributesEx
  super_class: java.lang.Object
{
  public abstract java.lang.CharSequence getData(int);
    descriptor: (I)Ljava/lang/CharSequence;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      idx   

  public abstract java.lang.CharSequence getData(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/CharSequence;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
           Name  Flags
      nsUri      
      localName  
}
SourceFile: "AttributesEx.java"