public void setLastModifiedTimestamp(String lastModifiedTimestamp) {
        this.lastModifiedTimestamp = lastModifiedTimestamp;
    }
<p>
The date and time the high-availability partition group was last modified.
</p>

@param lastModifiedTimestamp
       The date and time the high-availability partition group was last modified.
aws-java-sdk-cloudhsm/src/main/java/com/amazonaws/services/cloudhsm/model/DescribeHapgResult.java