merge method
Merge this instance with other
.
Implementation
DomainCertificate merge(DomainCertificate other) {
var fullChain = '$fullChainPEM\n\n${other.fullChainPEM}';
var privateKey = '$privateKeyPEM\n\n${other.privateKeyPEM}';
return DomainCertificatePEM(
[...domains, ...other.domains], fullChain, privateKey);
}