public TimeWindow withStartTime(java.util.Date startTime) {
        setStartTime(startTime);
        return this;
    }
<p>
The beginning of the time range from which you want <code>GetSampledRequests</code> to return a sample of the
requests that your AWS resource received. You must specify the date and time in Coordinated Universal Time (UTC)
format. UTC format includes the special designator, <code>Z</code>. For example, <code>"2016-09-27T14:50Z"</code>
. You can specify any time range in the previous three hours.
</p>

@param startTime
       The beginning of the time range from which you want <code>GetSampledRequests</code> to return a sample of
       the requests that your AWS resource received. You must specify the date and time in Coordinated Universal
       Time (UTC) format. UTC format includes the special designator, <code>Z</code>. For example,
       <code>"2016-09-27T14:50Z"</code>. You can specify any time range in the previous three hours.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-waf/src/main/java/com/amazonaws/services/waf/model/TimeWindow.java