$newline never
$forall SampleGroup Info{..} _ mSamples <- samples
#{metricName}

#{metricHelp}

$case mSamples $of []

_{MsgMetricNoSamples} $of _ $maybe (lPairs, sValue) <- singleSample metricName mSamples

#{decodeUtf8 sValue} $case lPairs $of [] $of _