1. DomName('CSSKeyframesRule.findRule')
  2. DocsEditable()
  3. Experimental()
CssKeyframeRule findRule(String key)

Source 

@DomName('CSSKeyframesRule.findRule')
@DocsEditable()
@Experimental() // untriaged
CssKeyframeRule findRule(String key) => wrap_jso(_blink.BlinkCSSKeyframesRule.instance.findRule_Callback_1_(unwrap_jso(this), key));