open fun url(url: HttpUrl): Request.Builder
open fun url(url: String): Request.Builder
Sets the URL target of this request.
IllegalArgumentException - if url is not a valid HTTP or HTTPS URL. Avoid this
exception by calling HttpUrl.parse; it returns null for invalid URLs.
open fun url(url: URL): Request.Builder
Sets the URL target of this request.
IllegalArgumentException - if the scheme of url is not http or https.