arn_example_4.py

tg_foo_bar = TargetGroupArn(
    "arn:aws:elasticloadbalancing:us-east-1:123456789012:targetgroup/foo-bar/abc123"
)

# generate a new ARN from the first one
tg_baz_quz = TargetGroupArn(
    target_group_arn,
    name="baz-qux",
    internal_id="def456",
)

# the fields were overridden
assert tg_baz_quz.name == "baz-qux"
assert tg_baz_quz.internal_id == "def456"

# and the new ARN is the str() of the object
assert str(tg_baz_quz) == (
    "arn:aws:elasticloadbalancing:us-east-1:123456789012:targetgroup/baz-qux/def456"
)