code: func (s PluginMetaSet) WithName(name string) PluginMetaSet {
  	ns := make(PluginMetaSet)
  	for p := range s {
  		if p.Name == name {
  			ns.Add(p)
  		}
  	}
  	return ns
  }
docs: // WithName returns the subset of metas that have the given name.