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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_key(self, key, label, notes=None):
 """Adds a new SSH key to the account. :param string key: The SSH key to add :param string label: The label for the key :param string notes: Additional notes for the key :returns: A dictionary of the new key's information. """

        order = {
            'key': key,
            'label': label,
            'notes': notes,
        }

        return self.sshkey.createObject(order)