dispose method
void
dispose()
Implementation
void dispose(){
final len = buffers.keys.toList();
for(int i = 0; i < len.length;i++){
if(len[i] is BufferAttribute){
(len[i] as BufferAttribute).dispose();
remove(len[i]);
}
else if(len[i] is NativeArray){
(len[i] as NativeArray).dispose();
remove(len[i]);
}
}
buffers.clear();
}