Value model in AdditionalFieldDefinition is an empty class, thus silently drops all data

The Value class in additionalfielddefinition.py is defined as an empty Pydantic BaseModel with no fields:

class Value(BaseModel):
  r"""Either a string or HypertextField. When OpenAPI Generator supports oneOf, we can semantically enforce this in the docs."""

Because the SDK's BaseModel uses the default Pydantic extra = 'ignore' behavior, any data passed to Value(...) is silently discarded. This means the value field on AdditionalFieldDefinition, which is typed as Optional[List[Value]], cannot actually carry any data.
Impact

This affects any consumer using AdditionalFieldDefinition through either:

• EmployeeInfoDefinition.additional_fields
• TeamInfoDefinition.additional_fields

When constructing an AdditionalFieldDefinition with values, the data in the value list is lost:

from glean.api_client.models.additionalfielddefinition import AdditionalFieldDefinition, Value
field = AdditionalFieldDefinition(
  key="languages",
  value=[Value(anchor="English"), Value(anchor="Spanish")]
)
print(field.model_dump())
# {'key': 'languages', 'value': [{}, {}]}
#                                 ^^   ^^  all data silently dropped

The same applies to HypertextField-style values:

Value(anchor="Glean", hyperlink="https://glean.com")
# Value()  — both anchor and hyperlink are silently ignored

This is the associated public docs page: https://developers.glean.com/api/indexing-api/bulk-index-employees. Note that even when passing in data to Value() as a dict, the whole dict object is ignored:

from glean.api_client.models.additionalfielddefinition import AdditionalFieldDefinition

raw = {"key": "username", "value": [{"username": "testuser"}]}
field = AdditionalFieldDefinition(**raw)
dumped = field.model_dump()
print(dumped)
# {'key': 'username', 'value': [{}]}

Bắt đầu trong glean/api_client/models/additionalfielddefinition.py bằng cách kiểm tra model Value đang trống và cách AdditionalFieldDefinition tạo danh sách value của nó. Tái hiện các ví dụ được ghi trong tài liệu với các đầu vào anchor, hyperlink và dictionary, sau đó xác nhận rằng model_dump() giữ nguyên dữ liệu đã cung cấp thay vì tạo ra các đối tượng trống.