feat: add code samples for model optimizer

[yan283]

Description

Add a code sample for the model-optimizer-exp-04-09 endpoint using GenAI API.

Checklist

• I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• README is updated to include all relevant information
• Tests pass: nox -s py-3.9 (see Test Environment Setup)
• Lint pass: nox -s lint (see Test Environment Setup)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[snippet-bot]

Here is the summary of changes.

You are about to add 1 region tag.

• genai/text_generation/model_optimizer_textgen_with_txt.py:17, tag googlegenaisdk_model_optimizer_textgen_with_txt

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[gemini-code-assist]

Hello @yan283, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

Summary of Changes

This pull request adds a code sample for the model-optimizer-exp-04-09 endpoint using the GenAI API. It includes a new Python file (model_optimizer_textgen_with_txt.py) containing the code sample and updates the test file (test_text_generation_examples.py) to include a test case for the new sample.

Highlights

• New Code Sample: Adds a new code sample demonstrating the use of the model-optimizer-exp-04-09 endpoint for text generation.
• Test Integration: Includes a new test case to verify the functionality of the added code sample.

Changelog

• genai/text_generation/model_optimizer_textgen_with_txt.py
  • Created a new file with a code sample for the model-optimizer-exp-04-09 endpoint.
  • The sample demonstrates how to generate content using the GenAI API.
  • The sample uses genai.Client to interact with the API.
  • The sample sends the prompt "How does AI work?" to the model.
  • The sample prints the response text to the console.
• genai/text_generation/test_text_generation_examples.py
  • Imported the new model_optimizer_textgen_with_txt module.
  • Added a new test function test_model_optimizer_textgen_with_txt to test the new code sample.
  • The test function calls the generate_content function from the new module and asserts that the response is not empty.

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A model's mind, optimized,
Generates text, a wondrous prize.
With each new sample,
An example ample,
AI's potential, realized.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

The pull request adds a new code sample for the model-optimizer-exp-04-09 endpoint using the GenAI API. The code sample is well-structured and includes a test case. However, there are a few areas that could be improved for clarity and maintainability.

Summary of Findings

• Model ID Hardcoding: The model ID 'model-optimizer-exp-04-09' is hardcoded in the example. While this is acceptable for a sample, consider adding a comment explaining that this ID is specific to the model optimizer experiment and may change in the future. This will prevent confusion if the sample is used as a template.
• Copyright Year: The copyright year is set to 2025. Please confirm that this is the correct year.

Merge Readiness

The pull request is almost ready for merging. Please address the copyright year and consider adding a comment about the model ID. I am unable to directly approve the pull request, and users should have others review and approve this code before merging.

[holtskinner]

@msampathkumar Can you verify that the filename/region tag works with your scheme?