Gets location information for this string.
Locations are arbitrary pairs of type and name strings, used to store information about the origins of the string, like the file name it was found on, the path on which it was discovered, etc...
A string can have any number of locations since the same string may be found on different places of Drupal code and configuration.
bool $check_only: (optional) Set to TRUE to get only new locations added during the current page request and not loading all existing locations.
array Location ids indexed by type and name.
public function getLocations($check_only = FALSE);