@Override
    public boolean equals(final Object other) {
        return other instanceof ColumnTraversal
                && Objects.equals(((ColumnTraversal) other).column, this.column);
    }
@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/lambda/ColumnTraversal.java