public void setGrantTime(java.util.Date grantTime) {
        this.grantTime = grantTime;
    }
<p>
The date and time the Qualification was granted to the Worker. If the Worker's Qualification was revoked, and
then re-granted based on a new Qualification request, GrantTime is the date and time of the last call to the
AcceptQualificationRequest operation.
</p>

@param grantTime
       The date and time the Qualification was granted to the Worker. If the Worker's Qualification was revoked,
       and then re-granted based on a new Qualification request, GrantTime is the date and time of the last call
       to the AcceptQualificationRequest operation.
aws-java-sdk-mechanicalturkrequester/src/main/java/com/amazonaws/services/mturk/model/Qualification.java