class RuboCop::Cop::Style::FormatStringToken

def split_token(source_range, match_begin, match_end)
  token =
    slice_source(
      source_range,
      source_range.begin_pos + match_begin,
      source_range.begin_pos + match_end
    )
  remainder =
    slice_source(
      source_range,
      source_range.begin_pos + match_end,
      source_range.end_pos
    )
  [token, remainder]
end