@Override
          public IterationMode next(final NodeType node) {
            final IZyNodeRealizer realizer = node.getRealizer();

            final ZyLabelContent content = realizer.getNodeContent();

            for (final ZyLineContent line : content) {
              selection.append(line.getText());
              selection.append("\n");
            }

            selection.append("\n");

            return IterationMode.CONTINUE;
          }
Returns the predecessors of the selected nodes of a graph.

@param <NodeType> The type of the nodes in the graph.
@param graph The graph in question.
@return A collection of all predecessor nodes of the selected graph nodes.
java/zylib/src/main/java/com/google/security/zynamics/zylib/gui/zygraph/helpers/GraphHelpers.java