def read_optional_validation_alias(
    p: Annotated[str | None, Body(embed=True, validation_alias="p_val_alias")] = None,
):
    return {"p": p}


class BodyModelOptionalValidationAlias(BaseModel):
    p: str | None = Field(None, validation_alias="p_val_alias")


@app.post(
    "/model-optional-validation-alias", operation_id="model_optional_validation_alias"
)

def read_optional_validation_alias(
    p: Annotated[str | None, Form(validation_alias="p_val_alias")] = None,
):
    return {"p": p}


class FormModelOptionalValidationAlias(BaseModel):
    p: str | None = Field(None, validation_alias="p_val_alias")


@app.post(
    "/model-optional-validation-alias", operation_id="model_optional_validation_alias"
)

    p: Annotated[bytes | None, File(validation_alias="p_val_alias")] = None,
):
    return {"file_size": len(p) if p else None}


@app.post(
    "/optional-uploadfile-validation-alias",
    operation_id="optional_uploadfile_validation_alias",
)
def read_optional_uploadfile_validation_alias(
    p: Annotated[UploadFile | None, File(validation_alias="p_val_alias")] = None,
):