// should be granted
grant principal com.sun.security.auth.UnixPrincipal "1" {
    permission java.util.PropertyPermission "foo", "read";
};

// should be granted
grant principal javax.security.auth.x500.X500Principal "cn=2",
    principal com.sun.security.auth.NTUserPrincipal "2" {
    permission java.util.PropertyPermission "bar", "read";
};

// should not be granted
grant principal javax.security.auth.x500.X500Principal "cn=2",
    principal com.sun.security.auth.UnixPrincipal "1" {
    permission java.util.PropertyPermission "foobar", "read";
};