need help to translate C into D

[test123]

I can not use importC, I need it to be work in D code.


```d
typedef struct {
   uint32_t mask_limit;   // Limit enum value that can be tested 
with mask.
   uint32_t value_count;  // Number of values after the bitfield.
   uint32_t data[];       // Bitmask + enumerated values follow.
} upb_MiniTable_Enum;
```

I am not sure how to define the `__gshared const 
upb_MiniTable_Enum` object for this struct.