code: def add_svc_avail_path(path):
      '''
      Add a path that may contain available services.
      Return ``True`` if added (or already present), ``False`` on error.
  
      path
          directory to add to AVAIL_SVR_DIRS
      '''
      if os.path.exists(path):
          if path not in AVAIL_SVR_DIRS:
              AVAIL_SVR_DIRS.append(path)
          return True
      return Falsf add_svc_avail_path(path):
      '''
      Add a path that may contain available services.
      Return ``True`` if added (or already present), ``False`` on error.
  
      path
          directory to add to AVAIL_SVR_DIRS
      '''
      if os.path.exists(path):
          if path not in AVAIL_SVR_DIRS:
              AVAIL_SVR_DIRS.append(path)
          return True
      return False
docs: Add a path that may contain available services.
      Return ``True`` if added (or already present), ``False`` on error.
  
      path
          directory to add to AVAIL_SVR_DIRS