xamarin.forms - How to set FontAttributes within XAML to both Bold and Italic? -

in xamarin.forms, how set fontattributes within xaml both bold , italic?

example:

  <style targettype="label">     <setter property="fontattributes" value="bold" />     <setter property="fontattributes" value="italic" />   </style> 

<style targettype="label">   <setter property="fontattributes" value="bold, italic" /> </style> 

fontattributes flag, can pass multiple values.