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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 GetArtifactParserDependencies(rdf_artifact):
 """Return the set of knowledgebase path dependencies required by the parser. Args: rdf_artifact: RDF artifact object. Returns: A set of strings for the required kb objects e.g. ["users.appdata", "systemroot"] """

  deps = set()
  processors = parser.Parser.GetClassesByArtifact(rdf_artifact.name)
  for p in processors:
    deps.update(p.knowledgebase_dependencies)
  return deps