@type t() :: %DockerEngineAPI.Model.SystemDataUsageResponse{
  BuildCache: [DockerEngineAPI.Model.BuildCache.t()] | nil,
  Containers: [DockerEngineAPI.Model.ContainerSummary.t()] | nil,
  Images: [DockerEngineAPI.Model.ImageSummary.t()] | nil,
  LayersSize: integer() | nil,
  Volumes: [DockerEngineAPI.Model.Volume.t()] | nil
}