spfx Add Content type to List/Library using pnp

private AddSiteToContentTypeToList():void

{

//id of content type

pnp.sp.web.lists.getByTitle("Test").contentTypes

.add("0x01002189FE08454A7F4ABA16A6F0D0E030FE","CustomContentType")

.then(function(response)

{

console.log("Content Type added to List!");

}).catch(function(exception)

{

alert("Something went wrong :"+exception);

});

}