[
  {
    "op": "core/column-addition",
    "engineConfig": {
      "facets": [
        {
          "type": "list",
          "name": "ddb:transfer",
          "expression": "isBlank(value)",
          "columnName": "ddb:transfer",
          "invert": false,
          "omitBlank": false,
          "omitError": false,
          "selection": [
            {
              "v": {
                "v": false,
                "l": "false"
              }
            }
          ],
          "selectBlank": false,
          "selectError": false
        }
      ],
      "mode": "row-based"
    },
    "baseColumnName": "ddb:transfer",
    "expression": "grel:with([ ['pdf','application/pdf'], ['exe','application/x-msdownload'], ['zip','application/zip'] ], x, forEach(value.split('␞'), v, forEach(x, z, if(v.endsWith(z[0]), z[1], null)).join('')).join('␞'))",
    "onError": "set-to-blank",
    "newColumnName": "mime",
    "columnInsertIndex": 29,
    "description": "Create column mime at index 29 based on column ddb:transfer using expression grel:with([ ['pdf','application/pdf'], ['exe','application/x-msdownload'], ['zip','application/zip'] ], x, forEach(value.split('␞'), v, forEach(x, z, if(v.endsWith(z[0]), z[1], null)).join('')).join('␞'))"
  }
]