https://reports.kea.isc.org/dev_guide/db/dff/structisc_1_1dhcp_1_1Dhcp4Parser_1_1symbol__kind.html
Kea: isc::dhcp::Dhcp4Parser::symbol_kind Struct Reference
isc dhcpkeasymbolkindstruct
https://reports.kea.isc.org/dev_guide/dd/d46/structisc_1_1dhcp_1_1Dhcp4Parser_1_1by__kind.html
Kea: isc::dhcp::Dhcp4Parser::by_kind Struct Reference
isc dhcpby kindkeastructreference