def time_zone_definition!(zone)
      attributes = {'Id' => zone[:id]}
      attributes['Name'] = zone[:name] if zone[:name]
      nbuild[NS_EWS_TYPES].TimeZoneDefinition(attributes)
    end
def time_zone_definition!(zone)
      attributes = {'Id' => zone[:id]}
      attributes['Name'] = zone[:name] if zone[:name]
      nbuild[NS_EWS_TYPES].TimeZoneDefinition(attributes)
    end
Specify a time zone
 @todo Implement subelements Periods, TransitionsGroups and Transitions to override zone
 @see http://msdn.microsoft.com/en-us/library/exchange/dd899488.aspx