src/test/resources/struct_joint_pk.json

{
  "vertices": [
    {
      "label": "person",
      "input": {
        "type": "file",
        "path": "src/test/resources/vertex_person.csv",
        "format": "CSV",
        "charset": "UTF-8"
      },
      "mapping": {
        "name": "name",
        "age": "age",
        "city": "city"
      }
    }
  ]
}