How to query validator data in `cosmwasm` contract. about cw-plus HOT 2 OPEN

// msg.rs

/// Instances are created in the querier.
#[cw_serde]
pub struct Validator {
    /// The operator address of the validator (e.g. cosmosvaloper1...).
    /// See https://github.com/cosmos/cosmos-sdk/blob/v0.47.4/proto/cosmos/staking/v1beta1/staking.proto#L95-L96
    /// for more information.
    ///
    /// This uses `String` instead of `Addr` since the bech32 address prefix is different from
    /// the ones that regular user accounts use.
    pub address: String,
    pub commission: Decimal,
    pub max_commission: Decimal,
    /// The maximum daily increase of the commission
    pub max_change_rate: Decimal,
    pub tokens: String,
    pub delegator_shares: String,
}

/// The data format returned from StakingRequest::AllValidators query
#[cw_serde]
pub struct AllValidatorsResponseBak {
    pub validators: Vec<Validator>,
}


// contracts.rs
pub fn execute_test(
    deps: DepsMut,
    _env: Env,
    _info: MessageInfo,
    // beneficiaries: Vec<BeneficiaryBody>,
) -> Result<Response, ContractError> {
    let vals = deps.querier.query_all_validators()?;

    let request = StakingQuery::AllValidators {}.into();
    let data: AllValidatorsResponseBak = deps.querier.query(&request)?;
    let res_data = data.validators;
    Ok(Response::new()
        .add_attribute("action", "add_whitelists")
        .add_attribute("vals", format!("{:?}", vals))
        .add_attribute("vals", format!("{:?}", res_data)))
}