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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 _MigrateArtifact(artifact):
 """Migrate one Artifact from AFF4 to REL_DB."""

  name = Text(artifact.name)

  try:
    logging.info("Migating %s", name)
    data_store.REL_DB.WriteArtifact(artifact)
    logging.info("  Wrote %s", name)
  except db.DuplicatedArtifactError:
    logging.info("  Skipped %s, because artifact already exists.", name)