add crl.get_revoked_certificate method (#4331)
* add crl.get_revoked_certificate method
* lexicographic is the best ographic
* rename
diff --git a/docs/x509/reference.rst b/docs/x509/reference.rst
index 64097bf..bc3dd55 100644
--- a/docs/x509/reference.rst
+++ b/docs/x509/reference.rst
@@ -463,6 +463,15 @@
>>> crl.fingerprint(hashes.SHA256())
b'e\xcf.\xc4:\x83?1\xdc\xf3\xfc\x95\xd7\xb3\x87\xb3\x8e\xf8\xb93!\x87\x07\x9d\x1b\xb4!\xb9\xe4W\xf4\x1f'
+ .. method:: get_revoked_certificate_by_serial_number(serial_number)
+
+ .. versionadded:: 2.3
+
+ :param serial_number: The serial as a Python integer.
+ :returns: :class:`~cryptography.x509.RevokedCertificate` if the
+ ``serial_number`` is present in the CRL or ``None`` if it
+ is not.
+
.. attribute:: signature_hash_algorithm
:type: :class:`~cryptography.hazmat.primitives.hashes.HashAlgorithm`