KongPlugin and conditions, cors, return code, headers

Kubernetes
1

Hi, please help me, how i can write yuml configuration for KongIngress to provide some example like this state:

location /nifi-proxy/ {

    if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' "$http_origin";
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Accept';
        add_header 'Access-Control-Max-Age' 1728000;
        add_header 'Content-Length' 0;
        return 204;
    }
    if ($request_method = 'POST') {
        add_header 'Access-Control-Allow-Origin' "$http_origin";
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Accept';
        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
    }
    if ($request_method = 'PUT') {
        add_header 'Access-Control-Allow-Origin' "$http_origin";
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Accept';
        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
    }
    if ($request_method = 'GET') {
        add_header 'Access-Control-Allow-Origin' "$http_origin";
        add_header 'Access-Control-Allow-Credentials' 'true';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Accept';
        add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
    }

  proxy_pass http://nifi.backend.svc:8081/;
  proxy_set_header X-ProxyScheme http;
  proxy_set_header X-ProxyHost localhost;
  proxy_set_header X-ProxyPort 9090;
  proxy_set_header X-ProxyContextPath /nifi-proxy;
}