MetadataService (webauthn-server-core 1.5.0 API)

```
public interface MetadataService
```
Abstraction of a repository which can look up authenticator attestation metadata from an attestation certificate chain.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Attestation`	`getAttestation(java.util.List<java.security.cert.X509Certificate> attestationCertificateChain)`	Attempt to look up attestation for a chain of certificates

- Method Detail
  - getAttestation
```
Attestation getAttestation(java.util.List<java.security.cert.X509Certificate> attestationCertificateChain)
                    throws java.security.cert.CertificateEncodingException
```
    Attempt to look up attestation for a chain of certificates
    
    Parameters:
    
    attestationCertificateChain - a certificate chain, where each certificate in the list should be signed by the following certificate.
    
    Returns:
    
    Attestation metadata, if any is available. If the certificate chain is empty, or if there is no signature path from a trusted attestation root to the first certificate in attestationCertificateChange, return Attestation.empty().
    
    Throws:
    
    java.security.cert.CertificateEncodingException