public PRectangle getPageBoundary(final int specifiedBox) {
        PRectangle userSpecifiedBox = null;
        // required property
        if (specifiedBox == BOUNDARY_MEDIABOX) {
            userSpecifiedBox = (PRectangle) getMediaBox();
        }
        // required property
        else if (specifiedBox == BOUNDARY_CROPBOX) {
            userSpecifiedBox = (PRectangle) getCropBox();
        }
        // optional, default value is crop box
        else if (specifiedBox == BOUNDARY_BLEEDBOX) {
            if (bleedBox != null)
                userSpecifiedBox = (PRectangle) getBleedBox();
        }
        // optional, default value is crop box
        else if (specifiedBox == BOUNDARY_TRIMBOX) {
            if (trimBox != null)
                userSpecifiedBox = (PRectangle) getTrimBox();
        }
        // optional, default value is crop box
        else if (specifiedBox == BOUNDARY_ARTBOX) {
            if (artBox != null)
                userSpecifiedBox = (PRectangle) getArtBox();
        }
        // encase of bad usage, default to crop box
        else {
            userSpecifiedBox = (PRectangle) getBleedBox();
        }

        // just in case, make sure we return a non null boundary
        if (userSpecifiedBox == null) {
            userSpecifiedBox = (PRectangle) getCropBox();
        }

        return userSpecifiedBox;
    }