https://openjdk.java.net/ 
public interface javax.xml.crypto.dsig.SignatureMethod extends javax.xml.crypto.XMLStructure, javax.xml.crypto.AlgorithmMethod
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.xml.crypto.dsig.SignatureMethod
  super_class: java.lang.Object
{
  public static final java.lang.String DSA_SHA1;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://www.w3.org/2000/09/xmldsig#dsa-sha1"

  public static final java.lang.String RSA_SHA1;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://www.w3.org/2000/09/xmldsig#rsa-sha1"

  public static final java.lang.String HMAC_SHA1;
    descriptor: Ljava/lang/String;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: "http://www.w3.org/2000/09/xmldsig#hmac-sha1"

  public abstract java.security.spec.AlgorithmParameterSpec getParameterSpec();
    descriptor: ()Ljava/security/spec/AlgorithmParameterSpec;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "SignatureMethod.java"