Method contains

src/java/org/apache/poi/util/BinaryTree.java:208–220

(Object o)

                }

                public boolean contains(Object o)
                {
                    if (!(o instanceof Map.Entry))
                    {
                        return false;
                    }
                    Map.Entry entry = ( Map.Entry ) o;
                    Object    key   = entry.getKey();
                    Node      node  = lookup(( Comparable ) entry.getValue(),
                                             _VALUE);

                    return (node != null) && node.getData(_KEY).equals(key);
                }

                public boolean remove(Object o)
                {