dispose method Null safety

dynamic dispose(
  1. dynamic instance
)

自动清除stream缓存（请勿调用）

Implementation

dispose(dynamic instance) {
  if (instance is ComputeComputeFactory) {
    _computeCache.remove(instance);
  } else if (instance is WatchCollectFactory) {
    _watchCache.remove(instance);
  } else if (instance is StreamCollectFactory) {
    _streamCache.remove(instance);
  }
}