# Alias and validation alias


@app.post(
    "/optional-bytes-alias-and-validation-alias",
    operation_id="optional_bytes_alias_and_validation_alias",
)
def read_optional_bytes_alias_and_validation_alias(
    p: Annotated[
        Optional[bytes], File(alias="p_alias", validation_alias="p_val_alias")
    ] = None,
):
    return {"file_size": len(p) if p else None}


@app.post(