Create an unresolved field.

Can have dependencies, which is a list of atoms. All elements before the last comprise the path of a request that is also being processed, like [:data], and the last element is the key of that request that is required. Make sure to pass a list of lists of atoms. The second argument is a map, which contains all the values you requested, at the same path that they were requested.

For example:

resolve([[:data, :query], [:data, :data]], fn %{data: %{query: query, data: data}} ->
  data # This is the data field of the [:data] request
  query # This is the query field of the [:data] request

  {:ok, result}
  # or
  {:error, error}
  # or
  result
end)