buffers: make([]*buffer.Buffer, 0),
	}
	for l := zapcore.DebugLevel; l <= zapcore.FatalLevel; l++ {
		if baseCore.Enabled(l) {
			uc.minimumLevel = l
			break
		}
	}
	return zapcore.NewTee(baseCore, uc)
}

// Enabled implements zapcore.Core.
func (u *udsCore) Enabled(l zapcore.Level) bool {
	return l >= u.minimumLevel
}

// With implements zapcore.Core.