Sf part2

[srmnitc]

Create methods for creation of SF and update owl file.

[codecov]

Codecov Report

Attention: Patch coverage is 86.36364% with 12 lines in your changes missing coverage. Please review.

Project coverage is 65.49%. Comparing base (22bc11c) to head (132203a).
Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
atomrdf/structure.py	86.36%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #175      +/-   ##
==========================================
+ Coverage   64.97%   65.49%   +0.52%     
==========================================
  Files          25       25              
  Lines        3837     3924      +87     
==========================================
+ Hits         2493     2570      +77     
- Misses       1344     1354      +10     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.