code: func ShowCommandHelp(c *Context, command string) {
  	for _, c := range c.App.Commands {
  		if c.HasName(command) {
  			HelpPrinter(CommandHelpTemplate, c)
  			return
  		}
  	}
  
  	if c.App.CommandNotFound != nil {
  		c.App.CommandNotFound(c, command)
  	} else {
  		fmt.Printf("No help topic for '%v'\n", command)
  	}
  }
docs: // Prints help for the given command