Support empty sequence value

[goccy]

fix #414

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.85%. Comparing base (8f8d730) to head (4e3fa3a).

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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #503   +/-   ##
=======================================
  Coverage   76.85%   76.85%           
=======================================
  Files          18       18           
  Lines        6135     6136    +1     
=======================================
+ Hits         4715     4716    +1     
  Misses       1112     1112           
  Partials      308      308