fix: Why not set tenant to "" in ListTasksParams$Builder?

[ehsavoie]

ListTasksParams.Builder should set the tenant to "" when it is not defined.

Fixes #653 🦕

[gemini-code-assist]

Summary of Changes

Hello @ehsavoie, 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!

This pull request enhances the robustness of the ListTasksParams builder by ensuring that the tenant parameter is gracefully handled when not explicitly provided. Instead of failing with a null pointer check, the builder now defaults the tenant value to an empty string, preventing potential runtime errors and improving the user experience for API consumers.

Highlights

• Tenant Parameter Handling: Modified the ListTasksParams.Builder to set the tenant parameter to an empty string ("") if it is null, instead of relying on Assert.checkNotNullParam which would throw an exception.

Changelog

• spec/src/main/java/io/a2a/spec/ListTasksParams.java
  • Updated the build() method in ListTasksParams.Builder to handle null values for the tenant parameter by defaulting to an empty string.

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[gemini-code-assist]

Code Review

This pull request correctly modifies the ListTasksParams.Builder to default the tenant field to an empty string when it is not explicitly set. This makes the builder's behavior consistent with other constructors in the ListTasksParams class. I have added one suggestion to improve code consistency by using an existing utility method.

[kabir]

Looks good. Just wondering if we should use the util

[kabir]

Not sure if it really is needed, but we have the io.a2a.util.Utils.defaultIfNull() util to help with this here and other places