java.lang.Throwable Redirect loop detected

```

1 Dart.0 BaseCacheManager.getFile(package:flutter_cache_manager/src/cache_manager.dart:120)
--
2 Dart.1 CachedNetworkImageState._animatedWidget(package:cached_network_image/src/cached_image_widget.dart:261)
3 Dart.2 CachedNetworkImageState.build(package:cached_network_image/src/cached_image_widget.dart:194)
4 Dart.3 StatefulElement.build(package:flutter/src/widgets/framework.dart:3825)
5 Dart.4 ComponentElement.performRebuild(package:flutter/src/widgets/framework.dart:3739)
6 Dart.5 Element.rebuild(package:flutter/src/widgets/framework.dart:3565)
7 Dart.6 ComponentElement._firstBuild(package:flutter/src/widgets/framework.dart:3722)
8 Dart.7 StatefulElement._firstBuild(package:flutter/src/widgets/framework.dart:3864)
9 Dart.8 ComponentElement.mount(package:flutter/src/widgets/framework.dart:3717)

```
https://cdn.sinaimg.cn.52ecy.cn/large/005BYqpgly1g3dmzaw17lj30ya0o6gmv.jpg

Start by reading BaseCacheManager.getFile in package:flutter_cache_manager/src/cache_manager.dart at line 120 and the CachedNetworkImageState methods in package:cached_network_image/src/cached_image_widget.dart at lines 194 and 261. Reproduce the reported redirect-loop failure with the linked image URL and trace the cache and widget interaction. Done means the redirect loop is understood and the failing case no longer produces the reported Throwable.

索引モデルが issue の本文から書いたものです。