docs: def get_repo_url(mead_tag, nexus_base_url, prefix="hudson-", suffix=""):
      """
      Creates repository Nexus group URL composed of:
          <nexus_base_url>/content/groups/<prefix><mead_tag><suffix>
  
      :param mead_tag: name of the MEAD tag used to create the proxy URL in settings.xml
      :param nexus_base_url: the base URL of a Nexus instance
      :param prefix: Nexus group name prefix, default is "hudson-"
      :param suffix: Nexus group name suffix, e.g. "-jboss-central" or "-reverse"
      :returns:
      """
      result = urlparse.urljoin(nexus_base_url, "content/groups/")
      result = urlparse.urljoin(result, "%s%s%s/" % (prefix, mead_tag, suffix))
      return result