def get_bundle(iss, ver_keys, bundle_file):
fp = open(bundle_file, '<STR_LIT:r>')<EOL>signed_bundle = fp.read()<EOL>fp.close()<EOL>return JWKSBundle(iss, None).upload_signed_bundle(signed_bundle, ver_keys)<EOL>
Read a signed JWKS bundle from disc, verify the signature and
instantiate a JWKSBundle instance with the information from the file.

:param iss:
:param ver_keys:
:param bundle_file:
:return: