public KrbDelegationPermissionCollection() 
{
        perms = new ArrayList< Permission >();
}

 public  void add(Permission permission) 
{
        if (! (permission instanceof DelegationPermission))
            throw new IllegalArgumentException("invalid permission: "+
                                               permission);
        if (isReadOnly())
            throw new SecurityException("attempt to add a Permission to a readonly PermissionCollection");
        synchronized (this) {
            perms.add(0, permission);
        }
}

Adds a permission to the DelegationPermissions. The key for the hash is the name.

 public Enumeration<Permission> elements() 
{
        // Convert Iterator into Enumeration
        synchronized (this) {
            return Collections.enumeration(perms);
        }
}

Returns an enumeration of all the DelegationPermission objects in the container.

 public boolean implies(Permission permission) 
{
        if (! (permission instanceof DelegationPermission))
                return false;
        synchronized (this) {
            for (Permission x : perms) {
                if (x.implies(permission))
                    return true;
            }
        }
        return false;
}

Check and see if this collection of permissions implies the permissions expressed in "permission".