'Return a list of backends that can create resource_type.'

def backend_passes(self, backend_state, filter_properties):

    resource_type = filter_properties.get('resource_type')
    if (not self._satisfies_extra_specs(backend_state.capabilities, resource_type)):
        LOG.debug('%(backend_state)s    fails    resource_type    extra_specs    requirements', {'backend_state': backend_state})
        return False
    return True
