class RuboCop::Cop::Layout::BlockAlignment

def autocorrect(node)
  ancestor_node = start_for_block_node(node)
  start_col = compute_start_col(ancestor_node, node)
  loc_end = node.loc.end
  delta = start_col - loc_end.column
  if delta > 0
    add_space_before(loc_end, delta)
  elsif delta < 0
    remove_space_before(loc_end.begin_pos, -delta)
  end
end