public static ClientBuilder builder(String uri) {
        return builder(URI.create(requireNonNull(uri, "uri")));
    }
Returns a new {@link ClientBuilder} that builds the client that connects to the specified {@code uri}.

@throws IllegalArgumentException if the specified {@code uri} is invalid, or the specified
                                 {@code clientType} is unsupported for the {@code uri}'s scheme
core/src/main/java/com/linecorp/armeria/client/Clients.java