{
  "@renku_data_type": "zc.relation.catalog.Catalog",
  "@renku_oid": "activity-catalog",
  "_EMPTY_name_TO_relcount_relset": {
    "@renku_data_type": "BTrees.OOBTree.OOBTree",
    "@renku_oid": "858d7628fe5a438bbf51e336cb18f7421ef51da8e4774338aaa970e2037bb1ea",
    "@renku_reference": true
  },
  "_attrs": {
    "@renku_data_type": "BTrees.OOBTree.OOBucket",
    "@renku_oid": "f05b6e08af204b8897ee70197bd9efd0ad51384135314fc2b9c274724c7afb78",
    "@renku_reference": true
  },
  "_name_TO_mapping": {
    "@renku_data_type": "BTrees.OOBTree.OOBTree",
    "@renku_oid": "e2338d3976674343b39f5108416f8b36fa2c27be05774ce4924f19a3502899e0",
    "@renku_reference": true
  },
  "_queryFactories": {
    "@renku_data_type": "builtins.tuple",
    "@renku_data_value": [
      {
        "@renku_data_type": "zc.relation.queryfactory.TransposingTransitive",
        "@renku_oid": "bbc23412ab474e23b4fbaef11ab07402f7f8497995114cef9e802be4ed698b19",
        "@renku_reference": true
      }
    ]
  },
  "_relLength": {
    "@renku_data_type": "BTrees.Length.Length",
    "@renku_data_value": 0
  },
  "_relTokens": {
    "@renku_data_type": "BTrees.OOBTree.OOTreeSet",
    "@renku_data_value": null
  },
  "_relTools": {
    "BTree": {
      "@renku_data_type": "type",
      "@renku_data_value": "BTrees.OOBTree.OOBTree"
    },
    "Bucket": {
      "@renku_data_type": "type",
      "@renku_data_value": "BTrees.OOBTree.OOBucket"
    },
    "Set": {
      "@renku_data_type": "type",
      "@renku_data_value": "BTrees.OOBTree.OOSet"
    },
    "TreeSet": {
      "@renku_data_type": "type",
      "@renku_data_value": "BTrees.OOBTree.OOTreeSet"
    },
    "difference": {
      "@renku_data_type": "function",
      "@renku_data_value": "BTrees._OOBTree.difference"
    },
    "dump": {
      "@renku_data_type": "function",
      "@renku_data_value": "renku.infrastructure.gateway.database_gateway.dump_downstream_relations"
    },
    "intersection": {
      "@renku_data_type": "function",
      "@renku_data_value": "BTrees._OOBTree.intersection"
    },
    "load": {
      "@renku_data_type": "function",
      "@renku_data_value": "renku.infrastructure.gateway.database_gateway.load_downstream_relations"
    },
    "multiunion": null,
    "union": {
      "@renku_data_type": "function",
      "@renku_data_value": "BTrees._OOBTree.union"
    }
  },
  "_reltoken_name_TO_objtokenset": {
    "@renku_data_type": "BTrees.OOBTree.OOBTree",
    "@renku_oid": "df86305035964e66a883a2755e164dfe851bfcc8a10c4320968ac3e828213bf0",
    "@renku_reference": true
  }
}