internal/testdata/ext.proto2test.yaml:1:1 unknown field "[undefined]", expected one of [values]
   1 | '[undefined]': hi
   1 | ^

internal/testdata/ext.proto2test.yaml:4:1 expected scalar, got sequence
   4 | [buf.protoyaml.test.v1.p2t_repeated_string_ext, hi]: [hi]
   4 | ^

internal/testdata/ext.proto2test.yaml:9:24 field oneof_string_value is already set for oneof oneof_value
   9 |     oneof_int32_value: 1
   9 | .......................^
