Lists spfx breakRoleInheritance using pnp

private BreakInheritPermissionOnSPList():void

{

pnp.sp.web.lists.getByTitle("Employee").breakRoleInheritance(true)

.then(function(response)

{

console.log("Permission breaked successfully");

}).catch(function(exception)

{

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

});

}