Create Server with ssh_keys failed

[telsch]

Bug Report

Current Behavior
Tried to create a server from image with volume and ssh-keys failed:

sys.path.append('/home/user/hcloud-python/')
from hcloud import HcloudClient
client = HcloudClient(token=token)

volumes = client.volumes.get_by_id(id=vol_id)
ssh_keys = client.ssh_keys.get_all(name='user')

server = client.servers.create(name=vm, server_type=ServerType(name='cx11'), \
            image=Image(id=image_id), volumes=volumes, ssh_keys=ssh_keys)

Traceback (most recent call last):
  File "bin/hcloud-control.py", line 250, in <module>
    main(args)
  File "bin/hcloud-control.py", line 230, in main
    resume(client, args.vm)
  File "bin/hcloud-control.py", line 174, in resume
    image=Image(id=image_id), volumes=volumes, ssh_keys=ssh_keys)
  File "/home/user/hcloud-python/hcloud/servers/client.py", line 226, in create
    response = self._client.request(url="/servers", method="POST", json=data)
  File "/home/user/hcloud-python/hcloud/hcloud.py", line 109, in request
    self._raise_exception_from_json_content(json_content)
  File "/home/user/hcloud-python/hcloud/hcloud.py", line 84, in _raise_exception_from_json_content
    details=json_content['error']['details']
hcloud.hcloud.HcloudAPIException

if i put this in try...except block i got:
SSH key 'ssh_key_id not found

Environment
OS: Ubuntu 18.04.2 LTS
Python Version: v3.6.7
Hcloud-Python Version: 95120b9

[LKaemmerling]

Confirmed Bug:

Problem is the casting of the ID to a string. The backend tries to search for the ssh-key name then.

Will fix it soon! Thank you!