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Function execution end
Should I poll getExecution to know when a function has finished the execution?
TL;DR
To ensure that a function execution is completed and get the output in the response, set async=false when calling createExecution. This will make the request wait for the function to finish executing. There is no need to poll getExecution to check for completion. 
Heyy, either that, or when calling createExecution, set async=false. That way the request waits for it to finish, and you get function output in the response
