# Functions
AnalyticsRate returns the sampling rate at which events should be marked.
ClearHeaderTags assigns headersAsTags to a new, empty map It is invoked when WithHeaderTags is called, in order to overwrite the config.
HeaderTag returns the configured tag for a given header.
HeaderTagMap returns the mappings of headers to their tag values.
HeaderTagsLen returns the length of globalconfig's headersAsTags map, 0 for empty map.
RuntimeID returns this process's unique runtime id.
ServiceName returns the default service name used by non-client integrations such as servers and frameworks.
SetAnalyticsRate sets the given event sampling rate globally.
SetHeaderTag adds config for header `from` with tag value `to`.
SetServiceName sets the global service name set for this application.