<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_uaa(self, admin_secret, **kwargs):
 """ Creates an instance of UAA Service. :param admin_secret: The secret password for administering the service such as adding clients and users. """

        uaa = predix.admin.uaa.UserAccountAuthentication(**kwargs)
        if not uaa.exists():
            uaa.create(admin_secret, **kwargs)

        uaa.add_to_manifest(self)
        return uaa