Error on parsing pubspec.yaml while generating locales

When I use a hosted dependency in my pubspec and then I want to generate locales I face an error as below:

```
Bad state: expecting only one entry for dependency
#0 new DependencyReference.fromJson (package:pubspec/src/dependency.dart:19:9)
#1 new PubSpec.fromJson. (package:pubspec/src/pubspec.dart:103:68)
#2 JsonParser.mapValues. (package:pubspec/src/json_utils.dart:113:45)
#3 MapMixin.forEach (dart:collection/maps.dart:123:13)
#4 JsonParser.mapValues (package:pubspec/src/json_utils.dart:112:7)
#5 new PubSpec.fromJson (package:pubspec/src/pubspec.dart:103:15)
#6 new PubSpec.fromYamlString (package:pubspec/src/pubspec.dart:113:15)
#7 PubspecUtils.pubSpec (package:get_cli/common/utils/pubspec/pubspec_utils.dart:21:15)
#8 PubspecUtils._mapName. (package:get_cli/common/utils/pubspec/pubspec_utils.dart:36:51)
#9 _PubValue.value (package:get_cli/common/utils/pubspec/pubspec_utils.dart:159:26)
#10 PubspecUtils.projectName (package:get_cli/common/utils/pubspec/pubspec_utils.dart:37:46)
#11 sortImports (package:get_cli/functions/sorter_imports/sort.dart:17:45)
#12 writeFile (package:get_cli/functions/create/create_single_file.dart:40:21)
#13 Sample.create (package:get_cli/samples/interface/sample_interface.dart:28:12)
#14 GenerateLocalesCommand.execute (package:get_cli/commands/impl/generate/locales/locales.dart:97:10)

#15 main. (file:///C:/Users/fepco/AppData/Local/Pub/Cache/hosted/pub.dartlang.org/get_cli-1.5.0/bin/get.dart)

```

I traced the error and I figured that pubspec package cuases this error while it wants to pars pubspec.yaml

the standard hosted structure is like this

```yaml
some_package_name:
version: ^x.x.x
hosted:
name: some_package_name
url: https://some_url
```

the pubspec parser package allows only one child below any dependency, and looks for version as a child of hosted property while it should be in the same level of hosted not its child!

I will appreciate if you take care of this issue!