[Python] Generating None values for optional pydantic fields according to return_type even when they are missing in the actual API response.

Generated the client from: https://editor.swagger.io/#
API call return the Generated pydantic object with missing fields as Nones instead of not return them at all.
Basically this is because how the deserialization works:

Result before deserialization:

{
    "nextMarker": "123",
    "results": [{
            "id": "345",
            "key": "678",
            "created": "2021-05-24T07:39:53.245Z",
            "updated": "2021-07-08T11:20:17.768Z",
            "type": "type",
            "status": "status",
            "priority": "priority",
            "group": "group"
        }
    ]
}

Result after deserialization:

{
    'next_marker': '123',
    'results': [{
            'company': None,
            'created': datetime.datetime(2021, 5, 24, 7, 39, 53, 245000, tzinfo = tzlocal()),
            'description': None,
            'external_ids': None,
            'group': 'group',
            'id': '345',
            'key': '678',
            'name': None,
            'pending_for_group': None,
            'priority': 'priority',
            'redirection_reason': None,
            'status': 'status',
            'tags': None,
            'type': 'type',
            'updated': datetime.datetime(2021, 7, 8, 11, 20, 17, 768000, tzinfo = tzlocal())
        }
    ]
}

The pydantic object:

class Results(BaseModel):
    class Config:
        allow_population_by_field_name = True

    next_marker: Optional[str] = Field(
        None,
        alias="",
        description="description",
    )
    results: List["Res"]
    
 class Res(BaseModel):
    class Config:
        allow_population_by_field_name = True

    company: Optional[str] = Field(
        None,
        description="",
        example="",
    )
    created: datetime = Field(..., description="")
    description: Optional[str] = Field(
        None,
        description='',
        example="",
    )
    external_ids: Optional[List["ExId"]] = Field(
        None,
        alias="",
        description="",
    )
    group: Optional[str] = Field(
        None,
        description="",
        example="",
    )
    id: str = Field(
        ..., description=""
    )
    key: str = Field(
        ...,
        description="",
        example="",
    )
    name: Optional[str] = Field(
        None,
        description='',
        example="",
    )
    pending_for_group: Optional[str] = Field(
        None,
        alias="",
        description="",
    )
    priority: str = Field(
        ..., description="", example=""
    )
    redirection_reason: Optional[str] = Field(
        None,
        alias="",
        description="",
    )
    status: str = Field(..., description="", example="")
    tags: Optional[List[constr(regex=r"^\S*$")]] = Field(
        None,
        description="",
        example=[],
    )
    type: str = Field(..., description="", example="")
    updated: datetime = Field(
        ..., description=""
    )

Is there any way to not get the extra Generated pydantic fields (because they are not present in the actual API response)?
(They are marked as Optional in Type hints.)

No repository file or test is named. Reproduce the generated Python client from the Swagger Editor example, then inspect the Pydantic model generation and deserialization behavior for optional fields. Done means optional fields absent from the API response are not added as None, with the behavior verified against the shown response.