defaultMetricNameSanitizer

Default implementation of LabelSanitizer that sanitizes any “:” occurrences by replacing them with a replacement character. Defaults to replacing the illegal characters with “_”, e.g. “offending:example” becomes “offending_example”.

StatsdClient.swift:489
static let defaultMetricNameSanitizer: StatsdClient.MetricNameSanitizer

See https://github.com/b/statsd_spec for more info.