LINE_LENGTH: 79

**********
from typing import Generator


def build_label() -> str:
    """
    Build label.

    Returns:
        Result.
    """
    return 'ok'


def iter_labels() -> Generator[str, None, None]:
    """
    Iterate labels.

    Yields:
        Result.
    """
    yield 'ok'

**********
from typing import Generator


def build_label() -> str:
    """Build label.

    Returns:
        str: Result.
    """
    return 'ok'


def iter_labels() -> Generator[str, None, None]:
    """Iterate labels.

    Yields:
        str: Result.
    """
    yield 'ok'
