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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 role_get(auth=None, **kwargs):
    '''
    Get a single role

    CLI Example:

    .. code-block:: bash

        salt '*' keystoneng.role_get name=role1
        salt '*' keystoneng.role_get name=role1 domain_id=b62e76fbeeff4e8fb77073f591cf211e
        salt '*' keystoneng.role_get name=1eb6edd5525e4ac39af571adee673559
    '''
    cloud = get_operator_cloud(auth)
    kwargs = _clean_kwargs(**kwargs)
    return cloud.get_role(**kwargs)