UE::UnifiedError::Private::GetSharedStaticErrorDetails

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Description

For errors declared with UE_DECLARE_ERROR that have no payload fields, there is a single shared TMandatoryErrorDetails instance used by every FError of that type — it has no per-instance data to store. This helper returns that instance (constructed on first call).

For errors with payload fields, this helper is never called at runtime (FError operator() takes the fields-branch in an if-constexpr) and returns nullptr. The default-construction of PayloadType is guarded by the same if-constexpr so payload types are not required to be default-constructible.

namespace UE  
{  
    namespace UnifiedError  
    {  
        namespace Private  
        {  
            template<CErrorDeclaration ErrorDeclarationType>  
            const FMandatoryErrorDetails * UE::UnifiedError::Private::GetSharedStaticErrorDetails()  
        }  
    }  
}  
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namespace UE {     namespace UnifiedError     {         namespace Private         {             template<CErrorDeclaration ErrorDeclarationType>             const FMandatoryErrorDetails * UE::UnifiedError::Private::GetSharedStaticErrorDetails()         }     } }