in lib/elastic_apm/transport/serializers/span_serializer.rb [102:120]
def build_destination(destination)
return unless destination
base = {
address: keyword_field(destination.address),
port: destination.port
}
if (service = destination.service) && !service.empty?
base[:service] = service.to_h
end
if (cloud = destination.cloud) && !cloud.empty?
base[:cloud] = cloud.to_h
end
base
end