fix task result with path/tree can't be serialized#1351

Merged

Linary merged 3 commits intomasterfrom task-tojson-support-path-tree

Feb 4, 2021

+145-12

Commits on Jan 30, 2021

fix task result with path/tree can't be serialized
javeme
committed

Commits on Feb 1, 2021

add test
javeme
committed

Commits on Feb 3, 2021

fix test dynamic edge-label id
javeme
committed