[Enhancement]: Update Swift IAM samples returning custom structures to use SDK's own types instead

[shepazon]

Background story

Currently, a couple of the IAM examples are creating and returning objects of a custom type from partial data taken from the SDK's returned data. While this works fine in practice, it obfuscates the example a bit. Update these examples to instead simply return the SDK's fetched data structure.

What does this example accomplish?

This will make the snippets more complete, instead of being obfuscated by returning a structure whose definition is not fully clear.

Which AWS service(s)?

IAM

Which AWS SDKs or tools?

• All languages
• .NET
• Go (v2)
• Java
• Java (v2)
• JavaScript
• JavaScript (v3)
• Kotlin
• PHP
• Python
• Ruby
• Rust
• Swift
• Not applicable

Are there existing code examples to leverage?

• https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/swift/example_code/iam/ListPolicies
• https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/swift/example_code/iam/ListUsers

Do you have any reference code?

No response

[shepazon]

I'll do this one soon. Probably not this coming sprint but likely the one after.

[github-actions]

Marked stale by the Shirriff. Notifying @awsdocs/aws-sdk-docs-code-maintainers