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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 setup(self, artifacts, use_tsk, reason, grr_server_url, grr_username, grr_password, approvers=None, verify=True):
 """Initializes a GRR Hunt artifact collector. Args: artifacts: str, comma-separated list of GRR-defined artifacts. use_tsk: toggle for use_tsk flag. reason: justification for GRR access. grr_server_url: GRR server URL. grr_username: GRR username. grr_password: GRR password. approvers: str, comma-separated list of GRR approval recipients. verify: boolean, whether to verify the GRR server's x509 certificate. """

    super(GRRHuntArtifactCollector, self).setup(
        reason, grr_server_url, grr_username, grr_password,
        approvers=approvers, verify=verify)

    self.artifacts = [item.strip() for item in artifacts.strip().split(',')]
    if not artifacts:
      self.state.add_error('No artifacts were specified.', critical=True)
    self.use_tsk = use_tsk