function recordSourceMapMetric(agent) {
  const isSourceMapsEnabled = process.execArgv.includes('--enable-source-maps')
  if (isSourceMapsEnabled) {
    agent.metrics.getOrCreateMetric(NAMES.FEATURES.SOURCE_MAPS).incrementCallCount()
  }
}
Checks to see if `--enable-source-maps` is being used and logs a supportability metric.

@param {Agent} agent active NR agent