Support module_function in the indexer

[IgnacioFan]

Motivation

Closes #2653

The module_function invocation creates both a singleton method and a private method when using include in a class. The indexer needs to account for this behavior by mutating the method's visibility and handling both method types.

Implementation

When the indexer encounters a module_function, it updates the corresponding method entry:

• Changes the instance method’s visibility to private.
• Adds the singleton method to the indexer (public).

Automated Tests

Add a new test

[andyw8]

There are some typecheck failures.

[IgnacioFan]

There are some typecheck failures.

Hi @andyw8, Thank you for reviewing! I pushed a new commit, fixed the type check failures, and signed off on the CLA. Do I have to commit "I have signed the CLA!" to rerun the CI?

[vinistock]

This is looking great!

[andyw8]

Let's also add a fixture for module_function for easier manual verification/testing?

(I was surprised to see that Prism doesn't have one already).

[vinistock]

Let's also add a fixture for module_function for easier manual verification/testing?

Do we need one given that we have the unit test?

(I was surprised to see that Prism doesn't have one already).

module_function is just another Kernel method. There's nothing specific about parsing related to it because it's not a keyword.

[vinistock]

Thank you for the contribution!