return NS_AllocateContiguousHandleWithData(Buffer_ptr(0), NS_READABLE_CAST(PRUnichar, nsLiteralString(aData, aDataLength)), aAdditionalCapacity);
return NS_AllocateContiguousHandleWithData(Buffer_ptr(0), aReadable, aAdditionalCapacity);
      NewSingleAllocationBuffer( const PRUnichar* aData, PRUint32 aDataLength, PRUint32 aAdditionalCapacity = 1 )        {          typedef Buffer* Buffer_ptr;          return NS_AllocateContiguousHandleWithData(Buffer_ptr(0), NS_READABLE_CAST(PRUnichar, nsLiteralString(aData, aDataLength)), aAdditionalCapacity);        }