Asks the receiver for encrypted signals. Signals are provided to the 3PAS at request time. The
receiver must call completionHandler with signals or an error.
This method is called on a non-main thread. The receiver should avoid using the main thread to
prevent signal collection timeouts.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2021-03-03 UTC."],[],[]]