When custom effective date is passed in the check command, the response should
contain that date as an acknowledgemant that the check is performed at a time
different from now.
Also when the fee(s) returned contains a validDateRange (i. e. EAP fees that
are only valid during a certain period), the response will contain a notAfter
field which is the date after which the quoted fee(s) are no longer valid. (i.
e. the earliest of the end dates of all fees that would expire.
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Created by MOE: https://github.com/google/moe
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b783acfcc6