error: `java_multiple_files` is not supported in Edition 2024
  --> testdata/options/validate/java_multiple_files_2024.proto:19:8
   |
15 | edition = "2024";
   |           ------ edition specified here
...
19 | option java_multiple_files = true;
   |        ^^^^^^^^^^^^^^^^^^^
  help: replace with `features.(pb.java).nest_in_file_class`
   |
19 | - option java_multiple_files = true;
19 | + option features.(pb.java).nest_in_file_class = YES;
   |
   = help: deprecated since Edition 2023, removed in Edition 2024
   = help: `java_multiple_files` has been replaced with
           `features.(pb.java).nest_in_file_class`

encountered 1 error
