Access JWT Token from Controller in ASP.NET Web API

[HttpGet]
[Authorize(AuthenticationSchemes = JwtBearerDefaults.AuthenticationScheme)]
public async Task<ActionResult<string>> Get()
{
    var token = await HttpContext.GetTokenAsync("access_token");
    return token;
}

var token = Request.Headers["Authorization"];

var token2 = await HttpContext.GetTokenAsync(JwtBearerDefaults.AuthenticationScheme, "access_token");

References
https://stackoverflow.com/questions/58887151/how-to-access-token-data-from-controller-method
https://stackoverflow.com/questions/52793488/jwt-cannot-be-retrieved-by-httpcontext-gettokenasync-in-net-core-2-1