public void setStart(String start) {
        this.start = start;
    }
Requested reservation start time (UTC) in ISO-8601 format. The specified time must be between the first day of
the current month and one year from now. If no value is given, the default is now.

@param start
       Requested reservation start time (UTC) in ISO-8601 format. The specified time must be between the first
       day of the current month and one year from now. If no value is given, the default is now.
aws-java-sdk-medialive/src/main/java/com/amazonaws/services/medialive/model/PurchaseOfferingRequest.java