code: private void addTables(MpxjTreeNode parentNode, ProjectFile file)
     {
        for (Table table : file.getTables())
        {
           final Table t = table;
           MpxjTreeNode childNode = new MpxjTreeNode(table, TABLE_EXCLUDED_METHODS)
           {
              @Override public String toString()
              {
                 return t.getName();
              }
           };
           parentNode.add(childNode);
  
           addColumns(childNode, table);
        }
     }
docs: Add tables to the tree.
  
  @param parentNode parent tree node
  @param file tables container