How to use the dax.XnatUtils.CachedResource function in dax

def resources(self):
        """
        Get a list of CachedResource objects for the session

        :return: List of CachedResource objects for the session
        """
        res_list = []

        ruri = 'xnat:resources/xnat:resource'
        file_elements = self.sess_element.findall(ruri, NS)
        if file_elements:
            for file_element in file_elements:
                xmltype = '{http://www.w3.org/2001/XMLSchema-instance}type'
                xsi_type = file_element.get(xmltype)
                if xsi_type == 'xnat:resourceCatalog':
                    res_list.append(CachedResource(file_element, self))

        return res_list

def out_resources(self):
        """
        Get a list of CachedResource objects for "out" type

        :return: List of CachedResource objects for "out" type

        """
        res_list = []

        file_elements = self.assr_element.findall('xnat:out/xnat:file', NS)
        if file_elements:
            for file_element in file_elements:
                res_list.append(CachedResource(file_element, self))

        return res_list

def in_resources(self):
        """
        Get a list of CachedResource objects for "in" type

        :return: List of CachedResource objects for "in" type

        """
        res_list = []

        file_elements = self.assr_element.findall('xnat:in/xnat:file', NS)
        if file_elements:
            for file_element in file_elements:
                res_list.append(CachedResource(file_element, self))

        return res_list

def resources(self):
        """
        Get a list of the CachedResource (s) associated with this scan.

        :return: List of the CachedResource (s) associated with this scan.
        """
        res_list = []

        file_elements = self.scan_element.findall('xnat:file', NS)
        if file_elements:
            for file_element in file_elements:
                xmltype = '{http://www.w3.org/2001/XMLSchema-instance}type'
                xsi_type = file_element.get(xmltype)
                if xsi_type == 'xnat:resourceCatalog':
                    res_list.append(CachedResource(file_element, self))

        return res_list