@type t() :: %Incant.Dataset.Metadata{
  dimensions: [Incant.Dataset.Dimension.t()],
  filters: [Incant.Dataset.Filter.t()],
  from: term(),
  metrics: [Incant.Dataset.Metric.t()],
  module: module(),
  opts: keyword(),
  source: module() | term(),
  table: Incant.Dataset.Table.t(),
  title: String.t() | nil
}