…om_batch

Factor out mutation-setting logic from 'Connection'.

Behavior of test_batch._Connection changed in googleapis#524.

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Co-authored-by: Anthonios Partheniou <partheniou@google.com>

* docs: Add documentation for enums

fix: Add context manager return types

chore: Update gapic-generator-python to v1.8.1
PiperOrigin-RevId: 503210727

Source-Link: googleapis/googleapis@a391fd1

Source-Link: googleapis/googleapis-gen@0080f83
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* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* revert

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Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

…message + enable default `_` recognizer (#524)

* feat: add `model` and `language_codes` fields in `RecognitionConfig` message + enable default `_` recognizer

Enables specifying `model` and `language_codes` in requests without having to specify them in the Recognizer (they can still be specified in the Recognizer in the `default_recognition_config` field).

Also enables using the recognizer ID `_` to perform recognition without explicitly creating a Recognizer resource.

The top-level `model` and `language_codes` fields are deprecated in favor of the new fields added in the `RecognitionConfig` message. The old fields continue to work.

PiperOrigin-RevId: 545698919

Source-Link: googleapis/googleapis@e73fc8f

Source-Link: googleapis/googleapis-gen@b77dfdf
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* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

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….2 (#524)

….2 (#524)

Source-Link: googleapis/synthtool@453a5d9
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:81ed5ecdfc7cac5b699ba4537376f3563f6f04122c4ec9e735d3b3dc1d43dd32

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rsa](https://stuvel.eu/rsa) ([source](https://togithub.com/sybrenstuvel/python-rsa)) | minor | `>=3.1.4,<4.1` -> `>=3.1.4,<4.2` |

---

### Release Notes

<details>
<summary>sybrenstuvel/python-rsa</summary>

### [`v4.1`](https://togithub.com/sybrenstuvel/python-rsa/blob/master/CHANGELOG.md#Version-41---released-2020-06-10)

-   Added support for Python 3.8.
-   Dropped support for Python 2 and 3.4.
-   Added type annotations to the source code. This will make Python-RSA easier to use in
    your IDE, and allows better type checking.
-   Added static type checking via [MyPy](http://mypy-lang.org/).
-   Fix [#&#8203;129](https://togithub.com/sybrenstuvel/python-rsa/issues/129) Installing from source
    gives UnicodeDecodeError.
-   Switched to using [Poetry](https://poetry.eustace.io/) for package
    management.
-   Added support for SHA3 hashing: SHA3-256, SHA3-384, SHA3-512. This
    is natively supported by Python 3.6+ and supported via a third-party
    library on Python 3.5.
-   Choose blinding factor relatively prime to N. Thanks Christian Heimes for pointing this out.
-   Reject cyphertexts (when decrypting) and signatures (when verifying) that have
    been modified by prepending zero bytes. This resolves CVE-2020-13757. Thanks
    Adelapie for pointing this out.

</details>

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