proxy-rewrite how to set proxy_set_header

[ppkkddqq]

the original nginx conf:

location /test/ {
rewrite ^/test/(.*)$ /$1 break;
proxy_pass http://test;

proxy_set_header Connection "";
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Prefix test;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

}

the apisix conf:

uri: /test/*
plugins:
proxy-rewrite:
regex_uri: [ "^/test/(.*)","/$1" ]

how to add the proxy_set_header to apisix?