public Date getModifiedSinceConstraint() {
        return modifiedSinceConstraint;
    }
Gets the optional modified constraint that restricts this
request to executing only if the object <b>has</b> been
modified after the specified date.

@return The optional modified constraint that restricts this
        request to executing only if the object <b>has</b>
        been modified after the specified date.

@see GetObjectRequest#setModifiedSinceConstraint(Date)
@see GetObjectRequest#withModifiedSinceConstraint(Date)
aws-java-sdk-s3/src/main/java/com/amazonaws/services/s3/model/GetObjectRequest.java