https://openjdk.java.net/ 
public interface javax.xml.crypto.dsig.keyinfo.X509Data extends javax.xml.crypto.XMLStructure
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.xml.crypto.dsig.keyinfo.X509Data
  super_class: java.lang.Object
{
  public static final java.lang.String TYPE;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://www.w3.org/2000/09/xmldsig#X509Data"

  public static final java.lang.String RAW_X509_CERTIFICATE_TYPE;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://www.w3.org/2000/09/xmldsig#rawX509Certificate"

  public abstract java.util.List getContent();
    descriptor: ()Ljava/util/List;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "X509Data.java"