human
Solve the following python programming problem given the following code:
def testGetArtifactPathDependencies(self) : 
    sources = [{ 
        'type' : artifact_registry.ArtifactSource.SourceType.REGISTRY_KEY, 
        'attributes' : { 
            'keys' : ['%%current_control_set%%\\Control\\Session Manager\\Environment\\Path'], 
}, 
}, { 
        'type' : artifact_registry.ArtifactSource.SourceType.WMI, 
        'attributes' : { 
            'query' : "SELECT * FROM Win32_UserProfile WHERE SID='%%users.sid%%'", 
}, 
}, { 
        'type' : artifact_registry.ArtifactSource.SourceType.GREP, 
        'attributes' : { 
            'content_regex_list' : ['^%%users.username%%:'], 
}, 
}] 
    artifact = artifact_registry.Artifact (name = 'artifact', doc = 'Doco', provides = ['environ_windir'], supported_os = ['Windows'], urls = ['http://blah'], sources = sources) 
    self.assertItemsEqual ([MockGetClassesByArtifact ['type'] for x in artifact.ToPrimitiveDict () ['sources']], ['REGISTRY_KEY', 'WMI', 'GREP']) 
    class Parser1 (object) : 
        knowledgebase_dependencies = ['appdata', 'sid'] 
class Parser2 (object) : 
        knowledgebase_dependencies = ['sid', 'desktop'] 
@ classmethod 
    def MockGetClassesByArtifact(unused_cls, _) : 
        return [Parser1, Parser2] 
with utils.Stubber (parsers.Parser, 'GetClassesByArtifact', MockGetClassesByArtifact) : 
        self.assertItemsEqual (artifact.GetArtifactPathDependencies (), ['appdata', 'sid', 'desktop', 'current_control_set', 'users.sid', 'users.username']) 

    
    

    Fix the buggy line: self.assertItemsEqual ([MockGetClassesByArtifact ['type'] for x in artifact.ToPrimitiveDict () ['sources']], ['REGISTRY_KEY', 'WMI', 'GREP'])
assistant
#Here is Python program to fix the buggy line: self.

self.assertItemsEqual ([x ['type'] for x in artifact.ToPrimitiveDict () ['sources']], ['REGISTRY_KEY', 'WMI', 'GREP'])