`image_tokens` missing from embedding response model

[nathan-chappell]

SDK Version (required)
5.20.0

Describe the bug
Type for response from embedding API does not match with response.

I don't know if you guys need to regenerate the SDK from the API, update the API definition, or find a new generator, but the ApiMetaBilledUnits has an attribute images, while the response returned has an attribute image_tokens.

The generator using # type: ignore and ConfigDict(extra='allow') hides the issue.

# printing the billed units from a response
print(resp.meta.billed_units.model_dump_json(indent=2))
# output
{
  "images": null,
  "input_tokens": 0.0,
  "output_tokens": null,
  "search_units": null,
  "classifications": null,
  "image_tokens": 2716 # this attribute is not featured in the model
}