/**
* Ensures that there is at least one provider of the specified service type by extracting
* matching core plugins. Plugins must be named so that their file name starts with the service
* type, and then an underscore.
*
* @param pm The plugin manager to use to access services
* @param serviceType The type of service that should exist
*/
public static void ensureExists(final PluginManager pm, final String serviceType) {
if (pm.getServicesByType(serviceType).isEmpty()) {
extractCorePlugins(serviceType + "_");
pm.getPossiblePluginInfos(true);
}
}
