code: def AsDict(self):
      
      sources = []
      for source in self.sources:
        source_definition = {
            'type': source.type_indicator,
            'attributes': source.AsDict()
        }
        if source.supported_os:
          source_definition['supported_os'] = source.supported_os
        if source.conditions:
          source_definition['conditions'] = source.conditions
        sources.append(source_definition)
  
      artifact_definition = {
          'name': self.name,
          'doc': self.description,
          'sources': sources,
      }
      if self.labels:
        artifact_definition['labels'] = self.labels
      if self.supported_os:
        artifact_definition['supported_os'] = self.supported_os
      if self.provides:
        artifact_definition['provides'] = self.provides
      if self.conditions:
        artifact_definition['conditions'] = self.conditions
      if self.urls:
        artifact_definition['urls'] = self.urls
      return artifact_definition
docs: Represents an artifact as a dictionary.
  
      Returns:
        dict[str, object]: artifact attributes.