class TZInfo::DataSources::InvalidZoneinfoDirectory

file named zone1970.tab or zone.tab.
files, a country code index file named iso3166.tab and a time zone index
directory. A valid zoneinfo directory is one that contains time zone
is initialized with a specific zoneinfo path that is not a valid zoneinfo
An {InvalidZoneinfoDirectory} exception is raised if {ZoneinfoDataSource}