/**
  * Remove all the reifications of a given statement in this model, whatever their associated
  * resources.
  *
  * @param s the statement whose reifications are to be removed
  */
 public void removeAllReifications(FrontsTriple s) {
   reifier.remove(s.asTriple());
 }
 /**
  * Answer an iterator that iterates over all the reified statements in this model that reify a
  * given statement.
  *
  * @param s the statement whose reifications are sought.
  * @return an iterator over the reifications of s.
  */
 public RSIterator listReifiedStatements(FrontsTriple s) {
   return new RSIteratorImpl(findReifiedStatements(s.asTriple()));
 }
 /**
  * Answer true iff a given statement is reified in this model
  *
  * @param s the statement for which a reification is sought
  * @return true iff s has a reification in this model
  */
 public boolean isReified(FrontsTriple s) {
   return reifier.hasTriple(s.asTriple());
 }