workflows {
  name: "workflow1"
  workflow_type: "Sequence"
  nodes {
    name: "image_reader_op"
    type: "ReaderOp"
  }
  nodes {
    name: "image_seg_op"
    type: "ImageSegOp"
    dependencies {
      name: "image_reader_op"
      mode: "RO"
    }
  }
  nodes {
    name: "image_writer_op"
    type: "WriteJsonOp"
    dependencies {
      name: "image_seg_op"
      mode: "RO"
    }
  }
}