@type t() :: %DockerEngineAPI.Model.SignerIdentity{
  BuildConfigDigest: String.t() | nil,
  BuildConfigURI: String.t() | nil,
  BuildSignerDigest: String.t() | nil,
  BuildSignerURI: String.t() | nil,
  BuildTrigger: String.t() | nil,
  CertificateIssuer: String.t() | nil,
  Issuer: String.t() | nil,
  RunInvocationURI: String.t() | nil,
  RunnerEnvironment: String.t() | nil,
  SourceRepositoryDigest: String.t() | nil,
  SourceRepositoryIdentifier: String.t() | nil,
  SourceRepositoryOwnerIdentifier: String.t() | nil,
  SourceRepositoryOwnerURI: String.t() | nil,
  SourceRepositoryRef: String.t() | nil,
  SourceRepositoryURI: String.t() | nil,
  SourceRepositoryVisibilityAtSigning: String.t() | nil,
  SubjectAlternativeName: String.t() | nil
}