@type t() ::
  %Procore.Model.RestV20CompaniesCompanyIdProjectsProjectIdWorkflowsInstancesGet200ResponseDataInner{
    created_at: DateTime.t() | nil,
    ended_at: DateTime.t() | nil,
    id: String.t() | nil,
    item_id: String.t() | nil,
    started_at: DateTime.t() | nil,
    tool_subtype: String.t() | nil,
    tool_type: String.t() | nil,
    updated_at: DateTime.t() | nil
  }