code: func (client *cniClient) Capabilities(name string) ([]string, error) {
  	file := filepath.Join(client.pluginsPath, name)
  
  	// Check if the plugin file exists before executing it
  	_, err := os.Stat(file)
  	if err != nil {
  		return nil, errors.Wrapf(err, "ecscni: unable to describe file info for '%s'", file)
  	}
  
  	cmd := exec.Command(file, capabilitiesCommand)
  	capabilitiesInfo, err := cmd.Output()
  	if err != nil {
  		return nil, errors.Wrapf(err, "ecscni: failed invoking capabilities command for '%s'", name)
  	}
  
  	capabilities := &struct {
  		Capabilities []string `json:"capabilities"`
  	}{}
  	err = json.Unmarshal(capabilitiesInfo, capabilities)
  	if err != nil {
  		return nil, errors.Wrapf(err, "ecscni: failed to unmarshal capabilities for '%s' from string: %s", name, capabilitiesInfo)
  	}
  
  	return capabilities.Capabilities, nil
  }
docs: // Capabilities returns the capabilities supported by a plugin