const coreApp = lesan();
      const locationPure = {
        name: string(),
        population: number(),
        abb: string(),
      };
      const cities = coreApp.odm.newModel(
        "city",
        locationPure,
        {
          country: {
            schemaName: "country",
            type: "single",
            optional: false,
            relatedRelations: {
              cities: {
                type: "multiple",
                limit: 5,
                sort: {
                  field: "_id",
                  order: "asc",
                },
              },
            },
          },
        },
      );
  
const getCityActs = coreApp.acts.getActs("city");

  

    
      "addCity": {
        "validator": {
          "type": "object",
          "schema": {
            "set": {
              "type": "object",
              "schema": {
                "name": {
                  "type": "string",
                  "schema": null
                },
                "population": {
                  "type": "number",
                  "schema": null
                },
                "abb": {
                  "type": "string",
                  "schema": null
                },
                "isCapital": {
                  "type": "boolean",
                  "schema": null
                },
                "country": {
                  "type": "union",
                  "schema": null
                }
              }
            },
          }
        },
        "validationRunType": "assert"
      }