added functional options for auto mapping

[dimacgka]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 78.94737% with 4 lines in your changes missing coverage. Please review.

Project coverage is 79.05%. Comparing base (850e2a1) to head (0e89bcc).

Files with missing lines	Patch %	Lines
options.go	76.47%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #6      +/-   ##
==========================================
- Coverage   81.53%   79.05%   -2.49%     
==========================================
  Files           4        4              
  Lines         195      253      +58     
==========================================
+ Hits          159      200      +41     
- Misses         20       35      +15     
- Partials       16       18       +2     

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