fix #351 use factory method to generate FilterNode

[lucemia]

fix #351, create a factory method

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.17%. Comparing base (0db67f0) to head (298c2ef).

❗ Current head 298c2ef differs from pull request most recent head b3d6dc1. Consider uploading reports for the commit b3d6dc1 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #367      +/-   ##
==========================================
- Coverage   97.59%   97.17%   -0.43%     
==========================================
  Files          42       43       +1     
  Lines        1540     1558      +18     
==========================================
+ Hits         1503     1514      +11     
- Misses         37       44       +7     

Flag	Coverage Δ
3.10	97.17% <100.00%> (-0.43%)	⬇️
3.11	97.17% <100.00%> (-0.43%)	⬇️
3.12	97.17% <100.00%> (-0.43%)	⬇️

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