src/main/java/de/dfki/lt/loot/digraph/DirectedBiGraph.java
@Override
  public int newVertex() {
    int v = super.newVertex();
    if (v >= _inEdges.size())
      _inEdges.add(null);
    return v;
  }
/** This creates a new vertex. It either takes an available deleted vertex
   * or creates a completely new one.
   *
   * @return an empty vertex
   */
This creates a new vertex. It either takes an available deleted vertex
or creates a completely new one.

@return an empty vertex
This creates a new vertex . It either takes an available deleted vertex or creates a completely new one . @return an empty vertex
@Override
  public int newVertex() {
    int v = super.newVertex();
    if (v >= _inEdges.size())
      _inEdges.add(null);
    return v;
  }
@ Override public int newVertex ( ) { int v = super . newVertex ( ) ; if ( v >= _inEdges . size ( ) ) _inEdges . add ( null ) ; return v ; }
This creates a new vertex.
This creates a new vertex .