@UnstableApi
    public static <T> T newClient(ClientPreprocessors preprocessors, Class<T> clientType) {
        return builder(preprocessors).build(clientType);
    }
Creates a new client that is preprocessed the specified {@link ClientPreprocessors} with
using the default {@link ClientFactory}.

@param preprocessors the {@link ClientPreprocessors}
@param clientType the type of the new client
core/src/main/java/com/linecorp/armeria/client/Clients.java