public Group withLastModifiedTime(java.util.Date lastModifiedTime) {
        setLastModifiedTime(lastModifiedTime);
        return this;
    }
<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.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-synthetics/src/main/java/com/amazonaws/services/synthetics/model/Group.java