class Sorbet::Private::HiddenMethodFinder

def write_diff(source, rbi)
  puts "Building rbi id to symbol map"
  rbi_symbols = symbols_id_to_name(rbi, '')
  puts "Building source id to symbol map"
  source_symbols = symbols_id_to_name(source, '')
  puts "Writing #{DIFF_RBI}"
  diff = serialize_constants(
    source.fetch("children", []),
    rbi.fetch("children", []),
    Object, false, source_symbols, rbi_symbols)
  File.write(DIFF_RBI, diff)
end