Added one line of helpful code and comment it

[poudelef]

Description

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Type of change

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• Documentation update
  )

Tests

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Test Configuration:

Checklist

• I have signed the Contributor License Agreement.
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• My code follows the coding guidelines.
• I have performed a self code review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.

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[poudelef]

This is my first time trying to contribute. I am sorry if I caused any trouble. I am learning right now.