@type t() ::
  %ArchAstro.Types.Operations.GetApiV1ThreadsThreadMessages.Params.Nested.Metadata{
    clause: %{optional(String.t()) => ArchAstro.JSON.t()} | ArchAstro.Unset.t(),
    clauses:
      [%{optional(String.t()) => ArchAstro.JSON.t()}] | ArchAstro.Unset.t(),
    key: String.t() | ArchAstro.Unset.t(),
    operator: String.t() | ArchAstro.Unset.t(),
    path: [String.t()] | ArchAstro.Unset.t(),
    type: String.t() | ArchAstro.Unset.t(),
    value: ArchAstro.JSON.t() | ArchAstro.Unset.t()
  }