class RuboCop::Cop::Rails::WhereMissing

def replace_range(child)
  if (right_sibling = child.right_sibling)
    range_between(child.source_range.begin_pos, right_sibling.source_range.begin_pos)
  else
    range_between(child.left_sibling.source_range.end_pos, child.source_range.end_pos)
  end
end