Override a BlitzGateway wrapper

override.py

class ImageWrapper (omero.gateway.ImageWrapper):
    """
    omero_model_ImageI class wrapper overwrite omero.gateway.ImageWrapper
    """

    def getClientPath(self):
        print 'This one being run'
        qs = self._conn.getQueryService()
        params = omero.sys.ParametersI()
        params.addLong("iid", self.getId())
        query = "select fse from FilesetEntry fse join fse.fileset as fs "\
                "left outer join fs.images as image where image.id=:iid"

        # this could be OMERO 4, so handle that
        try:
            r = qs.findAllByQuery(query, params, self._conn.SERVICE_OPTS)
            paths = [fs.clientPath.val for fs in r]
            path = os.path.commonprefix(paths)
        except:
            path = ""
        return path

# Update the ref to ImageWrapper in BlitzGateway
print 'Updating the imagewrapper'
omero.gateway.ImageWrapper = ImageWrapper
omero.gateway.refreshWrappers()