https://reports.kea.isc.org/dev_guide/d6/d12/classisc_1_1asiolink_1_1IOAcceptor.html
Kea: isc::asiolink::IOAcceptor ProtocolType, CallbackType Class Template Reference
keaiscclasstemplatereference
https://codeql.github.com/codeql-standard-libraries/swift/codeql/swift/generated/type/ProtocolType.qll/type.ProtocolType$Generated$ProtocolType.html
ProtocolType
API documentation for CodeQL