Fb add get attr documentation

[nspielbau]

Closes #65

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 50.92%. Comparing base (bf3fea0) to head (f4b3770).

Additional details and impacted files

@@           Coverage Diff           @@
##              dev      #92   +/-   ##
=======================================
  Coverage   50.92%   50.92%           
=======================================
  Files          58       58           
  Lines        7348     7348           
  Branches     1604     1604           
=======================================
  Hits         3742     3742           
  Misses       3540     3540           
  Partials       66       66           

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Test Results

  3 files  ±0    3 suites  ±0   41s :stopwatch: ±0s 202 tests ±0  202 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  591 runs  ±0  591 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit f4b37705. ± Comparison against base commit bf3fea0a.

[github-actions[bot]]

Test Results

  3 files  ±0    3 suites  ±0   41s :stopwatch: ±0s 202 tests ±0  202 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0  591 runs  ±0  591 :white_check_mark: ±0  0 :zzz: ±0  0 :x: ±0 

Results for commit f4b37705. ± Comparison against base commit bf3fea0a.