wait.then(() = > {}) - this is basically used when you are waiting for a request to complete and then get the response and perform some action like validate response content, status code etc.. then() yield the content coming out of wait()

yeah, you are right, with other 2 you can't play with the response. But does all 3 waits wait for the same status to be completed or for example first one waits for the response header to get and not whole response. I definitely want to try that

wait would yield whole response which includes header and body and inside then block one can get what they want to validate

I understand that, but my goal is to find is there a time difference between those three. Does any of the examples waits longer than other two.