/**
* @param contentService A content service to filter the visible filters.
* @param aParent The parent used to search for a sorter.
* @return The set of filters that are 'visible' to the given viewer descriptor.
*/
public CommonSorterDescriptor[] findApplicableSorters(
NavigatorContentService contentService, Object aParent) {
INavigatorContentDescriptor sourceOfContribution =
contentService.getSourceOfContribution(aParent);
return findApplicableSorters(contentService, sourceOfContribution, aParent);
}
