def processing_blocks(self):
        """Return list of PBs associated with the subarray.

        <http://www.esrf.eu/computing/cs/tango/pytango/v920/server_api/server.html#PyTango.server.pipe>
        """
        sbi_ids = Subarray(self.get_name()).sbi_ids
        pbs = []
        for sbi_id in sbi_ids:
            sbi = SchedulingBlockInstance(sbi_id)
            pbs.append(sbi.processing_block_ids)
        return 'PB', pbs
Return list of PBs associated with the subarray.

        <http://www.esrf.eu/computing/cs/tango/pytango/v920/server_api/server.html#PyTango.server.pipe>