docs: def _parse_binding_config(self, binding_config):
          """Parse configured interface -> ACL bindings
  
          Bindings are returned as a set of (intf, name, direction) tuples:
          set([(intf1, acl_name, direction),
               (intf2, acl_name, direction),
               ...,
          ])
          """
          parsed_bindings = set()
          for acl in binding_config['aclList']:
              for intf in acl['configuredIngressIntfs']:
                  parsed_bindings.add((intf['name'], acl['name'],
                                       a_const.INGRESS_DIRECTION))
              for intf in acl['configuredEgressIntfs']:
                  parsed_bindings.add((intf['name'], acl['name'],
                                       a_const.EGRESS_DIRECTION))
          return parsed_bindings