http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.7. 
package org.bouncycastle.asn1.x509;

import org.bouncycastle.asn1.DERObjectIdentifier;

public class X509Attributes
{
    public static final DERObjectIdentifier RoleSyntax = new DERObjectIdentifier("2.5.4.72");
}