@type t() :: %RelayMark.Manifest.DataView{
  block_id: String.t(),
  columns: [String.t()],
  filter: map() | nil,
  group: String.t() | nil,
  limit: pos_integer() | nil,
  projection: String.t(),
  sort: [String.t()],
  source: String.t(),
  title: String.t() | nil
}