* Required: required if `protocol` is set to `HTTPS`
### listeners.tls.certificateRefs
### listeners.tls.certificateRefs
`CertificateRefs` contains a series of references to Kubernetes objects that contains TLS certificates and private keys. These certificates are used to establish a TLS handshake for requests that match the hostname of the associated `listener`. Each reference must be a Kubernetes Secret, and, if using a Secret in a namespace other than the`Gateway`'s, must have a corresponding `ReferencePolicy` created.
`CertificateRefs` contains a series of references to Kubernetes objects that contains TLS certificates and private keys. These certificates are used to establish a TLS handshake for requests that match the hostname of the associated `listener`. Each reference must be a Kubernetes Secret, and, if using a Secret in a namespace other than the`Gateway`'s, must have a corresponding `ReferencePolicy` created.