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liamaharonEgorPopelyaev
liamaharon
authored and
EgorPopelyaev
committed
Migrate fee payment from Currency to fungible (#2292)
Part of #226 Related #1833 - Deprecate `CurrencyAdapter` and introduce `FungibleAdapter` - Deprecate `ToStakingPot` and replace usage with `ResolveTo` - Required creating a new `StakingPotAccountId` struct that implements `TypedGet` for the staking pot account ID - Update parachain common utils `DealWithFees`, `ToAuthor` and `AssetsToBlockAuthor` implementations to use `fungible` - Update runtime XCM Weight Traders to use `ResolveTo` instead of `ToStakingPot` - Update runtime Transaction Payment pallets to use `FungibleAdapter` instead of `CurrencyAdapter` - [x] Blocked by #1296, needs the `Unbalanced::decrease_balance` fix
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‎bridges/bin/runtime-common/src/mock.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -165,7 +165,7 @@ impl pallet_balances::Config for TestRuntime {
165165
}
166166

167167
impl pallet_transaction_payment::Config for TestRuntime {
168-
type OnChargeTransaction = pallet_transaction_payment::CurrencyAdapter<Balances, ()>;
168+
type OnChargeTransaction = pallet_transaction_payment::FungibleAdapter<Balances, ()>;
169169
type OperationalFeeMultiplier = ConstU8<5>;
170170
type WeightToFee = IdentityFee<ThisChainBalance>;
171171
type LengthToFee = ConstantMultiplier<ThisChainBalance, TransactionByteFee>;

‎cumulus/pallets/collator-selection/src/lib.rs

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -81,6 +81,8 @@
8181
8282
#![cfg_attr(not(feature = "std"), no_std)]
8383

84+
use core::marker::PhantomData;
85+
use frame_support::traits::TypedGet;
8486
pub use pallet::*;
8587

8688
#[cfg(test)]
@@ -982,3 +984,15 @@ pub mod pallet {
982984
}
983985
}
984986
}
987+
988+
/// [`TypedGet`] implementaion to get the AccountId of the StakingPot.
989+
pub struct StakingPotAccountId<R>(PhantomData<R>);
990+
impl<R> TypedGet for StakingPotAccountId<R>
991+
where
992+
R: crate::Config,
993+
{
994+
type Type = <R as frame_system::Config>::AccountId;
995+
fn get() -> Self::Type {
996+
<crate::Pallet<R>>::account_id()
997+
}
998+
}

‎cumulus/parachains/common/src/impls.rs

Lines changed: 31 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -17,10 +17,11 @@
1717
//! Taken from polkadot/runtime/common (at a21cd64) and adapted for parachains.
1818
1919
use frame_support::traits::{
20-
fungibles::{self, Balanced, Credit},
21-
Contains, ContainsPair, Currency, Get, Imbalance, OnUnbalanced, OriginTrait,
20+
fungible, fungibles, tokens::imbalance::ResolveTo, Contains, ContainsPair, Currency, Defensive,
21+
Get, Imbalance, OnUnbalanced, OriginTrait,
2222
};
2323
use pallet_asset_tx_payment::HandleCredit;
24+
use pallet_collator_selection::StakingPotAccountId;
2425
use sp_runtime::traits::Zero;
2526
use sp_std::{marker::PhantomData, prelude::*};
2627
use xcm::latest::{
@@ -29,16 +30,20 @@ use xcm::latest::{
2930
};
3031
use xcm_executor::traits::ConvertLocation;
3132

33+
/// Type alias to conveniently refer to `frame_system`'s `Config::AccountId`.
34+
pub type AccountIdOf<T> = <T as frame_system::Config>::AccountId;
35+
3236
/// Type alias to conveniently refer to the `Currency::NegativeImbalance` associated type.
3337
pub type NegativeImbalance<T> = <pallet_balances::Pallet<T> as Currency<
3438
<T as frame_system::Config>::AccountId,
3539
>>::NegativeImbalance;
3640

37-
/// Type alias to conveniently refer to `frame_system`'s `Config::AccountId`.
38-
pub type AccountIdOf<R> = <R as frame_system::Config>::AccountId;
39-
4041
/// Implementation of `OnUnbalanced` that deposits the fees into a staking pot for later payout.
42+
#[deprecated(
43+
note = "ToStakingPot is deprecated and will be removed after March 2024. Please use frame_support::traits::tokens::imbalance::ResolveTo instead."
44+
)]
4145
pub struct ToStakingPot<R>(PhantomData<R>);
46+
#[allow(deprecated)]
4247
impl<R> OnUnbalanced<NegativeImbalance<R>> for ToStakingPot<R>
4348
where
4449
R: pallet_balances::Config + pallet_collator_selection::Config,
@@ -47,25 +52,30 @@ where
4752
{
4853
fn on_nonzero_unbalanced(amount: NegativeImbalance<R>) {
4954
let staking_pot = <pallet_collator_selection::Pallet<R>>::account_id();
55+
// In case of error: Will drop the result triggering the `OnDrop` of the imbalance.
5056
<pallet_balances::Pallet<R>>::resolve_creating(&staking_pot, amount);
5157
}
5258
}
5359

54-
/// Implementation of `OnUnbalanced` that deals with the fees by combining tip and fee and passing
55-
/// the result on to `ToStakingPot`.
60+
/// Fungible implementation of `OnUnbalanced` that deals with the fees by combining tip and fee and
61+
/// passing the result on to `ToStakingPot`.
5662
pub struct DealWithFees<R>(PhantomData<R>);
57-
impl<R> OnUnbalanced<NegativeImbalance<R>> for DealWithFees<R>
63+
impl<R> OnUnbalanced<fungible::Credit<R::AccountId, pallet_balances::Pallet<R>>> for DealWithFees<R>
5864
where
5965
R: pallet_balances::Config + pallet_collator_selection::Config,
6066
AccountIdOf<R>: From<polkadot_primitives::AccountId> + Into<polkadot_primitives::AccountId>,
6167
<R as frame_system::Config>::RuntimeEvent: From<pallet_balances::Event<R>>,
6268
{
63-
fn on_unbalanceds<B>(mut fees_then_tips: impl Iterator<Item = NegativeImbalance<R>>) {
69+
fn on_unbalanceds<B>(
70+
mut fees_then_tips: impl Iterator<
71+
Item = fungible::Credit<R::AccountId, pallet_balances::Pallet<R>>,
72+
>,
73+
) {
6474
if let Some(mut fees) = fees_then_tips.next() {
6575
if let Some(tips) = fees_then_tips.next() {
6676
tips.merge_into(&mut fees);
6777
}
68-
<ToStakingPot<R> as OnUnbalanced<_>>::on_unbalanced(fees);
78+
ResolveTo::<StakingPotAccountId<R>, pallet_balances::Pallet<R>>::on_unbalanced(fees)
6979
}
7080
}
7181
}
@@ -79,10 +89,11 @@ where
7989
R: pallet_authorship::Config + pallet_assets::Config<I>,
8090
AccountIdOf<R>: From<polkadot_primitives::AccountId> + Into<polkadot_primitives::AccountId>,
8191
{
82-
fn handle_credit(credit: Credit<AccountIdOf<R>, pallet_assets::Pallet<R, I>>) {
92+
fn handle_credit(credit: fungibles::Credit<AccountIdOf<R>, pallet_assets::Pallet<R, I>>) {
93+
use frame_support::traits::fungibles::Balanced;
8394
if let Some(author) = pallet_authorship::Pallet::<R>::author() {
8495
// In case of error: Will drop the result triggering the `OnDrop` of the imbalance.
85-
let _ = pallet_assets::Pallet::<R, I>::resolve(&author, credit);
96+
let _ = pallet_assets::Pallet::<R, I>::resolve(&author, credit).defensive();
8697
}
8798
}
8899
}
@@ -313,8 +324,14 @@ mod tests {
313324
#[test]
314325
fn test_fees_and_tip_split() {
315326
new_test_ext().execute_with(|| {
316-
let fee = Balances::issue(10);
317-
let tip = Balances::issue(20);
327+
let fee =
328+
<pallet_balances::Pallet<Test> as frame_support::traits::fungible::Balanced<
329+
AccountId,
330+
>>::issue(10);
331+
let tip =
332+
<pallet_balances::Pallet<Test> as frame_support::traits::fungible::Balanced<
333+
AccountId,
334+
>>::issue(20);
318335

319336
assert_eq!(Balances::free_balance(TEST_ACCOUNT), 0);
320337

‎cumulus/parachains/runtimes/assets/asset-hub-rococo/src/lib.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -252,7 +252,7 @@ parameter_types! {
252252
impl pallet_transaction_payment::Config for Runtime {
253253
type RuntimeEvent = RuntimeEvent;
254254
type OnChargeTransaction =
255-
pallet_transaction_payment::CurrencyAdapter<Balances, DealWithFees<Runtime>>;
255+
pallet_transaction_payment::FungibleAdapter<Balances, DealWithFees<Runtime>>;
256256
type WeightToFee = WeightToFee;
257257
type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;
258258
type FeeMultiplierUpdate = SlowAdjustingFeeUpdate<Self>;

‎cumulus/parachains/runtimes/assets/asset-hub-rococo/src/xcm_config.rs

Lines changed: 9 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -27,14 +27,13 @@ use assets_common::{
2727
use frame_support::{
2828
parameter_types,
2929
traits::{
30-
tokens::imbalance::ResolveAssetTo, ConstU32, Contains, Equals, Everything, Nothing,
31-
PalletInfoAccess,
30+
tokens::imbalance::{ResolveAssetTo, ResolveTo},
31+
ConstU32, Contains, Equals, Everything, Nothing, PalletInfoAccess,
3232
},
3333
};
3434
use frame_system::EnsureRoot;
3535
use pallet_xcm::XcmPassthrough;
3636
use parachains_common::{
37-
impls::ToStakingPot,
3837
xcm_config::{
3938
AllSiblingSystemParachains, AssetFeeAsExistentialDepositMultiplier,
4039
ConcreteAssetFromSystem, ParentRelayOrSiblingParachains, RelayOrOtherSystemParachains,
@@ -571,7 +570,13 @@ impl xcm_executor::Config for XcmConfig {
571570
MaxInstructions,
572571
>;
573572
type Trader = (
574-
UsingComponents<WeightToFee, TokenLocation, AccountId, Balances, ToStakingPot<Runtime>>,
573+
UsingComponents<
574+
WeightToFee,
575+
TokenLocation,
576+
AccountId,
577+
Balances,
578+
ResolveTo<StakingPot, Balances>,
579+
>,
575580
cumulus_primitives_utility::SwapFirstAssetTrader<
576581
TokenLocationV3,
577582
crate::AssetConversion,

‎cumulus/parachains/runtimes/assets/asset-hub-westend/src/lib.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -210,7 +210,7 @@ parameter_types! {
210210
impl pallet_transaction_payment::Config for Runtime {
211211
type RuntimeEvent = RuntimeEvent;
212212
type OnChargeTransaction =
213-
pallet_transaction_payment::CurrencyAdapter<Balances, DealWithFees<Runtime>>;
213+
pallet_transaction_payment::FungibleAdapter<Balances, DealWithFees<Runtime>>;
214214
type WeightToFee = WeightToFee;
215215
type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;
216216
type FeeMultiplierUpdate = SlowAdjustingFeeUpdate<Self>;

‎cumulus/parachains/runtimes/assets/asset-hub-westend/src/xcm_config.rs

Lines changed: 9 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -27,14 +27,13 @@ use assets_common::{
2727
use frame_support::{
2828
parameter_types,
2929
traits::{
30-
tokens::imbalance::ResolveAssetTo, ConstU32, Contains, Equals, Everything, Nothing,
31-
PalletInfoAccess,
30+
tokens::imbalance::{ResolveAssetTo, ResolveTo},
31+
ConstU32, Contains, Equals, Everything, Nothing, PalletInfoAccess,
3232
},
3333
};
3434
use frame_system::EnsureRoot;
3535
use pallet_xcm::XcmPassthrough;
3636
use parachains_common::{
37-
impls::ToStakingPot,
3837
xcm_config::{
3938
AllSiblingSystemParachains, AssetFeeAsExistentialDepositMultiplier,
4039
ConcreteAssetFromSystem, RelayOrOtherSystemParachains,
@@ -593,7 +592,13 @@ impl xcm_executor::Config for XcmConfig {
593592
MaxInstructions,
594593
>;
595594
type Trader = (
596-
UsingComponents<WeightToFee, WestendLocation, AccountId, Balances, ToStakingPot<Runtime>>,
595+
UsingComponents<
596+
WeightToFee,
597+
WestendLocation,
598+
AccountId,
599+
Balances,
600+
ResolveTo<StakingPot, Balances>,
601+
>,
597602
cumulus_primitives_utility::SwapFirstAssetTrader<
598603
WestendLocationV3,
599604
crate::AssetConversion,

‎cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/lib.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -322,7 +322,7 @@ parameter_types! {
322322
impl pallet_transaction_payment::Config for Runtime {
323323
type RuntimeEvent = RuntimeEvent;
324324
type OnChargeTransaction =
325-
pallet_transaction_payment::CurrencyAdapter<Balances, DealWithFees<Runtime>>;
325+
pallet_transaction_payment::FungibleAdapter<Balances, DealWithFees<Runtime>>;
326326
type OperationalFeeMultiplier = ConstU8<5>;
327327
type WeightToFee = WeightToFee;
328328
type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;

‎cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo/src/xcm_config.rs

Lines changed: 9 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -33,13 +33,13 @@ use bp_relayers::{PayRewardFromAccount, RewardsAccountOwner, RewardsAccountParam
3333
use bp_runtime::ChainId;
3434
use frame_support::{
3535
parameter_types,
36-
traits::{ConstU32, Contains, Equals, Everything, Nothing},
36+
traits::{tokens::imbalance::ResolveTo, ConstU32, Contains, Equals, Everything, Nothing},
3737
StoragePrefixedMap,
3838
};
3939
use frame_system::EnsureRoot;
40+
use pallet_collator_selection::StakingPotAccountId;
4041
use pallet_xcm::XcmPassthrough;
4142
use parachains_common::{
42-
impls::ToStakingPot,
4343
xcm_config::{
4444
AllSiblingSystemParachains, ConcreteAssetFromSystem, ParentRelayOrSiblingParachains,
4545
RelayOrOtherSystemParachains,
@@ -298,8 +298,13 @@ impl xcm_executor::Config for XcmConfig {
298298
RuntimeCall,
299299
MaxInstructions,
300300
>;
301-
type Trader =
302-
UsingComponents<WeightToFee, TokenLocation, AccountId, Balances, ToStakingPot<Runtime>>;
301+
type Trader = UsingComponents<
302+
WeightToFee,
303+
TokenLocation,
304+
AccountId,
305+
Balances,
306+
ResolveTo<StakingPotAccountId<Runtime>, Balances>,
307+
>;
303308
type ResponseHandler = PolkadotXcm;
304309
type AssetTrap = PolkadotXcm;
305310
type AssetLocker = ();

‎cumulus/parachains/runtimes/bridge-hubs/bridge-hub-westend/src/lib.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -292,7 +292,7 @@ parameter_types! {
292292
impl pallet_transaction_payment::Config for Runtime {
293293
type RuntimeEvent = RuntimeEvent;
294294
type OnChargeTransaction =
295-
pallet_transaction_payment::CurrencyAdapter<Balances, DealWithFees<Runtime>>;
295+
pallet_transaction_payment::FungibleAdapter<Balances, DealWithFees<Runtime>>;
296296
type OperationalFeeMultiplier = ConstU8<5>;
297297
type WeightToFee = WeightToFee;
298298
type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;

‎cumulus/parachains/runtimes/bridge-hubs/bridge-hub-westend/src/xcm_config.rs

Lines changed: 9 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -22,12 +22,12 @@ use super::{
2222
use crate::bridge_common_config::{DeliveryRewardInBalance, RequiredStakeForStakeAndSlash};
2323
use frame_support::{
2424
parameter_types,
25-
traits::{ConstU32, Contains, Equals, Everything, Nothing},
25+
traits::{tokens::imbalance::ResolveTo, ConstU32, Contains, Equals, Everything, Nothing},
2626
};
2727
use frame_system::EnsureRoot;
28+
use pallet_collator_selection::StakingPotAccountId;
2829
use pallet_xcm::XcmPassthrough;
2930
use parachains_common::{
30-
impls::ToStakingPot,
3131
xcm_config::{
3232
AllSiblingSystemParachains, ConcreteAssetFromSystem, ParentRelayOrSiblingParachains,
3333
RelayOrOtherSystemParachains,
@@ -246,8 +246,13 @@ impl xcm_executor::Config for XcmConfig {
246246
RuntimeCall,
247247
MaxInstructions,
248248
>;
249-
type Trader =
250-
UsingComponents<WeightToFee, WestendLocation, AccountId, Balances, ToStakingPot<Runtime>>;
249+
type Trader = UsingComponents<
250+
WeightToFee,
251+
WestendLocation,
252+
AccountId,
253+
Balances,
254+
ResolveTo<StakingPotAccountId<Runtime>, Balances>,
255+
>;
251256
type ResponseHandler = PolkadotXcm;
252257
type AssetTrap = PolkadotXcm;
253258
type AssetLocker = ();

‎cumulus/parachains/runtimes/collectives/collectives-westend/src/lib.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -224,7 +224,7 @@ parameter_types! {
224224
impl pallet_transaction_payment::Config for Runtime {
225225
type RuntimeEvent = RuntimeEvent;
226226
type OnChargeTransaction =
227-
pallet_transaction_payment::CurrencyAdapter<Balances, DealWithFees<Runtime>>;
227+
pallet_transaction_payment::FungibleAdapter<Balances, DealWithFees<Runtime>>;
228228
type WeightToFee = WeightToFee;
229229
type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;
230230
type FeeMultiplierUpdate = SlowAdjustingFeeUpdate<Self>;

‎cumulus/parachains/runtimes/collectives/collectives-westend/src/xcm_config.rs

Lines changed: 12 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -20,17 +20,15 @@ use super::{
2020
};
2121
use frame_support::{
2222
parameter_types,
23-
traits::{ConstU32, Contains, Equals, Everything, Nothing},
23+
traits::{tokens::imbalance::ResolveTo, ConstU32, Contains, Equals, Everything, Nothing},
2424
weights::Weight,
2525
};
2626
use frame_system::EnsureRoot;
27+
use pallet_collator_selection::StakingPotAccountId;
2728
use pallet_xcm::XcmPassthrough;
28-
use parachains_common::{
29-
impls::ToStakingPot,
30-
xcm_config::{
31-
AllSiblingSystemParachains, ConcreteAssetFromSystem, ParentRelayOrSiblingParachains,
32-
RelayOrOtherSystemParachains,
33-
},
29+
use parachains_common::xcm_config::{
30+
AllSiblingSystemParachains, ConcreteAssetFromSystem, ParentRelayOrSiblingParachains,
31+
RelayOrOtherSystemParachains,
3432
};
3533
use polkadot_parachain_primitives::primitives::Sibling;
3634
use polkadot_runtime_common::xcm_sender::ExponentialPrice;
@@ -271,8 +269,13 @@ impl xcm_executor::Config for XcmConfig {
271269
type UniversalLocation = UniversalLocation;
272270
type Barrier = Barrier;
273271
type Weigher = FixedWeightBounds<TempFixedXcmWeight, RuntimeCall, MaxInstructions>;
274-
type Trader =
275-
UsingComponents<WeightToFee, WndLocation, AccountId, Balances, ToStakingPot<Runtime>>;
272+
type Trader = UsingComponents<
273+
WeightToFee,
274+
WndLocation,
275+
AccountId,
276+
Balances,
277+
ResolveTo<StakingPotAccountId<Runtime>, Balances>,
278+
>;
276279
type ResponseHandler = PolkadotXcm;
277280
type AssetTrap = PolkadotXcm;
278281
type AssetClaims = PolkadotXcm;

‎cumulus/parachains/runtimes/contracts/contracts-rococo/src/lib.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -234,7 +234,7 @@ parameter_types! {
234234
impl pallet_transaction_payment::Config for Runtime {
235235
type RuntimeEvent = RuntimeEvent;
236236
type OnChargeTransaction =
237-
pallet_transaction_payment::CurrencyAdapter<Balances, DealWithFees<Runtime>>;
237+
pallet_transaction_payment::FungibleAdapter<Balances, DealWithFees<Runtime>>;
238238
type WeightToFee = WeightToFee;
239239
/// Relay Chain `TransactionByteFee` / 10
240240
type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;

‎cumulus/parachains/runtimes/coretime/coretime-rococo/src/lib.rs

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -244,7 +244,7 @@ parameter_types! {
244244
impl pallet_transaction_payment::Config for Runtime {
245245
type RuntimeEvent = RuntimeEvent;
246246
type OnChargeTransaction =
247-
pallet_transaction_payment::CurrencyAdapter<Balances, DealWithFees<Runtime>>;
247+
pallet_transaction_payment::FungibleAdapter<Balances, DealWithFees<Runtime>>;
248248
type OperationalFeeMultiplier = ConstU8<5>;
249249
type WeightToFee = WeightToFee;
250250
type LengthToFee = ConstantMultiplier<Balance, TransactionByteFee>;

‎cumulus/parachains/runtimes/coretime/coretime-rococo/src/xcm_config.rs

Lines changed: 9 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -22,12 +22,12 @@ use super::{
2222
use frame_support::{
2323
pallet_prelude::PalletInfoAccess,
2424
parameter_types,
25-
traits::{ConstU32, Contains, Equals, Everything, Nothing},
25+
traits::{tokens::imbalance::ResolveTo, ConstU32, Contains, Equals, Everything, Nothing},
2626
};
2727
use frame_system::EnsureRoot;
28+
use pallet_collator_selection::StakingPotAccountId;
2829
use pallet_xcm::XcmPassthrough;
2930
use parachains_common::{
30-
impls::ToStakingPot,
3131
xcm_config::{
3232
AllSiblingSystemParachains, ConcreteAssetFromSystem, ParentRelayOrSiblingParachains,
3333
RelayOrOtherSystemParachains,
@@ -240,8 +240,13 @@ impl xcm_executor::Config for XcmConfig {
240240
RuntimeCall,
241241
MaxInstructions,
242242
>;
243-
type Trader =
244-
UsingComponents<WeightToFee, RocRelayLocation, AccountId, Balances, ToStakingPot<Runtime>>;
243+
type Trader = UsingComponents<
244+
WeightToFee,
245+
RocRelayLocation,
246+
AccountId,
247+
Balances,
248+
ResolveTo<StakingPotAccountId<Runtime>, Balances>,
249+
>;
245250
type ResponseHandler = PolkadotXcm;
246251
type AssetTrap = PolkadotXcm;
247252
type AssetClaims = PolkadotXcm;

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