logger:
  mdc:
    key1:
      key: key
      level: DEBUG
      loggers:
        - io.kokuwa.a
        - io.kokuwa.b
      values:
        - value-1
        - value-2
    key2:
      key: key
      level: TRACE
      loggers:
        - io.kokuwa.b
        - io.kokuwa.c
      values:
        - value-2
    key:
      level: TRACE
      loggers:
        - io.kokuwa
      values:
        - value-3
    user: {}