[Complexity] Method MerchantDomainService::CreateMerchantUser has a cyclomatic complexity of 11 (limit is 8)

[github-actions]

Codacy ID: d9b4f5ff703dcb944075e08372c7e974

File: TransactionProcessor.BusinessLogic/Services/MerchantDomainService.cs
Line: 259
Rule: Complexity (Warning)
Commit: 5b8f3e64d731c7b181b225e9d4117fda74faa3ac

Message: Method MerchantDomainService::CreateMerchantUser has a cyclomatic complexity of 11 (limit is 8)

**Code Snippet:**
```csharp
        public async Task<Result> CreateMerchantUser(MerchantCommands.CreateMerchantUserCommand command, CancellationToken cancellationToken) 
```