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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def all_linked_artifacts_exist(self):
 """All of the artifact paths for this resolve point to existing files."""

    if not self.has_resolved_artifacts:
      return False
    for path in self.resolved_artifact_paths:
      if not os.path.isfile(path):
        return False
    else:
      return True