code: def CreateGroup(r, name, alloc_policy=None, dry_run=False):
      
  
      query = {
          "dry-run": dry_run,
      }
  
      body = {
          "name": name,
          "alloc_policy": alloc_policy
      }
  
      return r.request("post", "/2/groups", query=query, content=body)
docs: Creates a new node group.
  
      @type name: str
      @param name: the name of node group to create
      @type alloc_policy: str
      @param alloc_policy: the desired allocation policy for the group, if any
      @type dry_run: bool
      @param dry_run: whether to peform a dry run
  
      @rtype: int
      @return: job id