# Functions
IsActionTakenOnGerritCL checks whether an action specified by `evalFn` has been take on a Gerrit CL.
MutateGerritCL calls SetReview on the given Gerrit CL.
# Constants
StaleCLAgeThreshold is the window that CL entity in datastore should be considered latest if refreshed within the threshold.
# Type aliases
ActionTakeEvalFn is the function signature to evaluate whether certain action has already been taken on the given Gerrit Change.