public Lattice<String> stringLattice(){
  assert isLinearChain();
  return Lattice.createStringLatticeFromString(source(),config);
}

public Lattice < String > stringLattice ( ) { assert isLinearChain ( ) ; return Lattice . createStringLatticeFromString ( source ( ) , config ) ; }
returns the sequence of word ids comprising the sentence . assumes this is a sentence and not a lattice .
