Use Connection.requester and rename req to request for clarity

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* test: use fully qualified request type name in tests

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…andwritten libraries (#158)

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### [1.6.1](googleapis/nodejs-retail@v1.6.0...v1.6.1) (2022-03-15)


### Bug Fixes

* remove gcloud_project env variable ([#156](googleapis/nodejs-retail#156)) ([16cefb4](googleapis/nodejs-retail@16cefb4))

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🤖 I have created a release \*beep\* \*boop\*
---
### [1.7.3](https://www.github.com/googleapis/nodejs-ai-platform/compare/v1.7.2...v1.7.3) (2021-06-29)


### Bug Fixes

* add C#, PHP and Ruby options for all AI Platform protos ([#158](https://www.github.com/googleapis/nodejs-ai-platform/issues/158)) ([da0babf](https://www.github.com/googleapis/nodejs-ai-platform/commit/da0babf54c6b074b8dc3d0354f8a57b9bc0cefc1))
* **deps:** google-gax v2.17.0 with mTLS ([#161](https://www.github.com/googleapis/nodejs-ai-platform/issues/161)) ([8e7d46f](https://www.github.com/googleapis/nodejs-ai-platform/commit/8e7d46f1252c4e89a663dd28b70b49bf269f091a))
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