Communicate clearly func intent

[jjngx]

Proposed changes

After merging this PR func names will communicate intent to the reader.
The naming convention follows the Go pattern of using the must (or Must) prefixes for functions that either internally call panic or make the program exit (os.Exit).

Checklist

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• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork