public void setRunStartTime(java.util.Date runStartTime) {
        this.runStartTime = runStartTime;
    }
<p>
The run start time of the test run step summary.
</p>

@param runStartTime
       The run start time of the test run step summary.
aws-java-sdk-apptest/src/main/java/com/amazonaws/services/apptest/model/TestRunStepSummary.java