public void setLastModifiedTime(java.util.Date lastModifiedTime) {
        this.lastModifiedTime = lastModifiedTime;
    }
<p>
The date and time that the group was most recently updated.
</p>

@param lastModifiedTime
       The date and time that the group was most recently updated.
aws-java-sdk-synthetics/src/main/java/com/amazonaws/services/synthetics/model/Group.java