def check_single_result_rows_count(rows: Sequence[Optional["T"]]) -> None:
"""
Verifies if the result has one and only one row.
:param rows: one element list of Models
:type rows: List[Model]
"""
if not rows or rows[0] is None:
raise NoMatch()
if len(rows) > 1:
raise MultipleMatches()
def check_single_result_rows_count(
rows: Sequence[Optional["Model"]]) -> None:
if not rows or rows[0] is None:
raise NoMatch()
if len(rows) > 1:
raise MultipleMatches()