# `SBoM.CycloneDX.V17.CryptoProperties.CertificateExtensions.Extension`
[🔗](https://github.com/erlef/mix_sbom/blob/v0.10.0/lib/sbom/cyclonedx/v17/crypto_properties/certificate_extensions/extension.pb.ex#L1)

Extension represents either a common extension or a custom extension

# `t`

```elixir
@type t() :: %SBoM.CycloneDX.V17.CryptoProperties.CertificateExtensions.Extension{
  __unknown_fields__: [Protobuf.unknown_field()],
  extension_type:
    {:commonExtension,
     SBoM.CycloneDX.V17.CryptoProperties.CertificateExtensions.CommonExtension.t()
     | nil}
    | {:customExtension,
       SBoM.CycloneDX.V17.CryptoProperties.CertificateExtensions.CustomExtension.t()
       | nil}
    | nil
}
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*