tree 08d7b2b114e471bf2d8841b513d37a878e2c115d
parent 61c43a6f842dcf477a4c5b44d46b8a8acb6ff0e6
author Zhiyi Zhang <zhiyi@cs.ucla.edu> 1601338092 -0700
committer Zhiyi Zhang <zhiyi@cs.ucla.edu> 1601338098 -0700

remove JSON parameter list from challenge module and add unified return interfaces for challenge modules

Change-Id: I0e69f7f8ef2ea36f38f11815aa980928b049cdc7