Wrong code generation for `EnumSponsorshipState` on Unique parachain

[RostislavLitovkin]

Here is the following metadata for SponsorshipState.Confirmed and SponsorshipState.Unconfirmed:

The underlying tuple has got 1 element of type AccountId. The Substrate.Net.Toolchain generated me the following code, which is different than what is in the real metadata.

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by a tool.
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------

using Substrate.NetApi.Model.Types.Base;
using System.Collections.Generic;


namespace Unique.NetApi.Generated.Model.up_data_structs
{
    
    
    /// <summary>
    /// >> SponsorshipState
    /// </summary>
    public enum SponsorshipState
    {
        
        /// <summary>
        /// >> Disabled
        /// </summary>
        Disabled = 0,
        
        /// <summary>
        /// >> Unconfirmed
        /// </summary>
        Unconfirmed = 1,
        
        /// <summary>
        /// >> Confirmed
        /// </summary>
        Confirmed = 2,
    }
    
    /// <summary>
    /// >> 646 - Variant[up_data_structs.SponsorshipState]
    /// </summary>
    public sealed class EnumSponsorshipState : BaseEnumRust<SponsorshipState>
    {
        
        /// <summary>
        /// Initializes a new instance of the class.
        /// </summary>
        public EnumSponsorshipState()
        {
				AddTypeDecoder<BaseVoid>(SponsorshipState.Disabled);
				AddTypeDecoder<Unique.NetApi.Generated.Model.pallet_evm.account.EnumBasicCrossAccountIdRepr>(SponsorshipState.Unconfirmed);
				AddTypeDecoder<Unique.NetApi.Generated.Model.pallet_evm.account.EnumBasicCrossAccountIdRepr>(SponsorshipState.Confirmed);
        }
    }
}

The last 2 lines are wrong:

AddTypeDecoder<Unique.NetApi.Generated.Model.pallet_evm.account.EnumBasicCrossAccountIdRepr>(SponsorshipState.Unconfirmed);
				AddTypeDecoder<Unique.NetApi.Generated.Model.pallet_evm.account.EnumBasicCrossAccountIdRepr>(SponsorshipState.Confirmed);

and should be:

AddTypeDecoder<AccountId>(SponsorshipState.Unconfirmed);
AddTypeDecoder<AccountId>(SponsorshipState.Confirmed);

When I try to decode the Collection type (which uses this enum), it fails and throws an exception.

I think this bug can occur on other chains as well.

[darkfriend77]

Without looking into the code, but looking at the metadata the type 266 is of pallet_evm.account.BasicCrossAccountIdRepr, which is an Enum holding either an Substrate: AccountId or a Ethereum:H160?

            id: 266
            type: {
              path: [
                pallet_evm
                account
                BasicCrossAccountIdRepr
              ]
              params: [
                {
                  name: AccountId
                  type: 0
                }
              ]
              def: {
                Variant: {
                  variants: [
                    {
                      name: Substrate
                      fields: [
                        {
                          name: null
                          type: 0
                          typeName: AccountId
                          docs: []
                        }
                      ]
                      index: 0
                      docs: []
                    }
                    {
                      name: Ethereum
                      fields: [
                        {
                          name: null
                          type: 208
                          typeName: H160
                          docs: []
                        }
                      ]
                      index: 1
                      docs: []
                    }
                  ]
                }
              }
              docs: []
            }
          }