added FetchCleanName to model, for models that contains [FetchResult]
added FetchCleanName to model, for models that contains [FetchResult]

avadev/AvaTaxClientLibrary,avadev/AvaTaxClientLibrary,avadev/AvaTaxClientLibrary,avadev/AvaTaxClientLibrary,avadev/AvaTaxClientLibrary,avadev/AvaTaxClientLibrary