question: public static void delete ( IResource resource ) throws CoreException { for ( int i = 0 ; i < MAX_RETRY ; i ++ ) { try { resource . delete ( IResource . FORCE | IResource . ALWAYS_DELETE_PROJECT_CONTENT , null ) ; i = MAX_RETRY ; } catch ( CoreException e ) { if ( i == MAX_RETRY - 1 ) { JavaPlugin . log ( e ) ; throw e ; } try { JavaPlugin . log ( new IllegalStateException ( "sleep before retrying JavaProjectHelper.delete() for " + resource . getLocationURI ( ) ) ) ; Thread . sleep ( RETRY_DELAY ) ; } catch ( InterruptedException e1 ) { } } } }
target:  Removes a resource. Retries if deletion failed (e.g. because the indexer still locks the file).