PRInt32 aType) { void* place = aAllocator.Alloc(sizeof(Cell)); return place ? ::new(place) Cell(aType) : nsnull;
PRUnichar* aName, PRInt32 aType, PRInt32 aSize, PRInt32 aMod, PRBool aIsPrimaryKey, nsIRDFResource* aProperty) { void* place = aAllocator.Alloc(sizeof(ColumnInfo)); return place ? ::new(place) ColumnInfo(aName, aType, aSize, aMod, aIsPrimaryKey, aProperty) : nsnull;
    Create(nsFixedSizeAllocator& aAllocator,           PRInt32 aType) {      void* place = aAllocator.Alloc(sizeof(Cell));      return place ? ::new(place) Cell(aType) : nsnull;    }