class ElasticAPM::Transport::Serializers::MetadataSerializer

def build_system(system)
  base = {
    configured_hostname: keyword_field(system.configured_hostname),
    architecture: keyword_field(system.architecture),
    platform: keyword_field(system.platform),
    kubernetes: keyword_object(system.kubernetes),
    container: keyword_object(system.container)
  }
  if system.detected_hostname
    base[:detected_hostname] = keyword_field(system.detected_hostname)
  end
  base
end