Resolved DSL config for one csv_export entity. Spark builds one struct per entity in a resource's csv_exports block, keyed by id.
csv_export
csv_exports
id
@type column() :: {String.t(), atom()} | {String.t(), atom(), column_opts()}
@type column_opts() :: keyword()
@type t() :: %AshCsvInterchange.Export.Type{ __spark_metadata__: term(), columns: [column()], id: atom(), label: String.t(), read_action: atom() }