typedef struct
{
USBD_CompositeClassTypeDef ClassType;
uint32_t ClassId;
uint32_t Active;
uint32_t NumEps;
USBD_EPTypeDef Eps[USBD_MAX_CLASS_ENDPOINTS];
uint32_t NumIf;
uint8_t Ifs[USBD_MAX_CLASS_INTERFACES];
} USBD_CompositeElementTypeDef;