make lookup cmd param optional and use Path to handle param path

[smtmfft]

Tiny refine.

[pinkiebell]

@smtmfft Thank you for the contribution! Please run the linter and then we are good to go 👌

[coveralls]

Pull Request Test Coverage Report for Build 4110758129

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 87.005%

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Totals
Change from base Build 4104273557:	0.0%
Covered Lines:	549
Relevant Lines:	631

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💛 - Coveralls

[smtmfft]

@smtmfft Thank you for the contribution! Please run the linter and then we are good to go 👌

Thanks! Fixed