class RuboCop::Cop::Rails::UnusedIgnoredColumns

def check_column_existence(column_node, table)
  column_name = column_name(column_node)
  return unless column_name
  return if table.with_column?(name: column_name.to_s)
  message = format(MSG, column_name: column_name)
  add_offense(column_node, message: message)
end