LET url = @lab.cdn.static + "/api/ts"
LET page = DOCUMENT(url, {
    driver: "cdp_headers",
    headers: {
        "single_header": "foo"
    }
})

LET el = ELEMENT(page, "#headers")
LET actual = JSON_PARSE(el.innerText)

LET expected = {
    "Single_header": ["foo"],
    "Multi_set_header":["multi_set_header_value"],
}

RETURN T::EQ({
    "Single_header": actual["Single_header"],
    "Multi_set_header": actual["Multi_set_header"],
}, expected)