Fix the API

[ChrisRackauckas]

Fixes #1

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 1.58%. Comparing base (2cd7445) to head (c49fdfa).

Files	Patch %	Lines
src/BaseModelica.jl	0.00%	3 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##            main      #6      +/-   ##
========================================
- Coverage   1.66%   1.58%   -0.08%     
========================================
  Files          4       4              
  Lines         60      63       +3     
========================================
  Hits           1       1              
- Misses        59      62       +3     

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