<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create(self, key=None, label=None):
 """ Associate an ssh key with your account and return it. """

        key = '%s' % key
        url = self.bitbucket.url('SET_SSH_KEY')
        return self.bitbucket.dispatch('POST', url, auth=self.bitbucket.auth, key=key, label=label)