F5 Python SDK - list certificates on device results in error

I could get the class:

certificates = session.tm.sys.crypto.certs.get_collection()

 Then you can iterate through it and get the list.

{'_meta_data': {'allowed_commands': [],
'allowed_lazy_attributes': [<class 'f5.bigip.resource.Stats'>],
'bigip': <f5.bigip.ManagementRoot object at 0x000001E2405E39D0>,
'container': <f5.bigip.tm.sys.crypto.Certs object at 0x000001E25450A8C0>,
'creation_uri_frag': '',
'creation_uri_qargs': {'ver': ['15.1.5.1']},
'exclusive_attributes': [],
'icontrol_version': '',
'icr_session': <icontrol.session.iControlRESTSession object at 0x000001E252664880>,
'minimum_additional_parameters': set(),
'minimum_version': '11.5.0',
'object_has_stats': True,
'read_only_attributes': [],
'reduction_forcing_pairs': [('enabled', 'disabled'),
('online', 'offline'),
('vlansEnabled', 'vlansDisabled')],
'required_command_parameters': set(),
'required_creation_parameters': {'name'},
'required_json_kind': 'tm:sys:crypto:cert:certstate',
'required_load_parameters': {'name'},
'uri': 'https://10.71.199.18:443/mgmt/tm/sys/crypto/cert/~Common~f5-irule.crt/'},
'apiRawValues': {'certificateKeySize': '2048',
'expiration': 'Jul 18 21:00:13 2027 GMT',
'issuer': 'emailAddress=support@f5.com,CN=support.f5.com,OU=Product '
'Development,O=F5 '
'Networks,L=Seattle,ST=Washington,C=US',
'publicKeyType': 'RSA'},
'certValidatorsReference': {'isSubcollection': True,
'link': 'https://localhost/mgmt/tm/sys/crypto/cert/~Common~f5-irule.crt/cert-validators?ver=15.1.5.1'},
'city': 'Seattle',
'commonName': 'support.f5.com',
'country': 'US',
'emailAddress': 'support@f5.com',
'fingerprint': 'SHA256/AC:08:EA:3F:0E:AC:C8:DD:A2:2A:7D:AA:73:02:86:1E:1F:38:51:4A:80:D3:E6:AE:4E:6B:01:0C:68:FF:18:D2',
'fullPath': '/Common/f5-irule.crt',
'generation': 1,
'kind': 'tm:sys:crypto:cert:certstate',
'name': '/Common/f5-irule.crt',
'organization': 'F5 Networks',
'ou': 'Product Development',
'selfLink': 'https://localhost/mgmt/tm/sys/crypto/cert/~Common~f5-irule.crt?ver=15.1.5.1',
'state': 'Washington'}