private Long markCoveredTokens ( Map < SNode , Long > markedAndCovered , SNode tok ) { RelannisNodeFeature f = RelannisNodeFeature . extract ( tok ) ; if ( markedAndCovered . containsKey ( tok ) && f != null && f . getMatchedNode ( ) == null ) { return markedAndCovered . get ( tok ) ; } return f != null ? f . getMatchedNode ( ) : null ; }
Checks if a token is covered by a matched node but not a match by it self .