code: func (config *Config) PluginHome() string {
  	if config.ENV.CFPluginHome != "" {
  		return filepath.Join(config.ENV.CFPluginHome, ".cf", "plugins")
  	}
  
  	return filepath.Join(homeDirectory(), ".cf", "plugins")
  }
docs: // PluginHome returns the plugin configuration directory to:
  //   1. The $CF_PLUGIN_HOME/.cf/plugins environment variable if set
  //   2. Defaults to the home directory (outlined in LoadConfig)/.cf/plugins