Mock request/post with mockito

I am having trouble covering the following function with tests (JUnit/Mockito), and can't find a way to mock the line response = getTarget(path).request().post(entity, Map.class);

Client client;

public Map<String, ?> postJson(String path, Map<String, ?> data){
    Map<String, ?> response = null;

    try {
        Entity<Map<String, ?>> entity = Entity.entity(data, MediaType.APPLICATION_JSON);
        response = getTarget(path).request().post(entity, Map.class);   
    } catch (Exception e) {
        LOG.error(e.toString());
    }

    return response;
}

public WebTarget getTarget(String path){
    return client.target(BASE_URI + path);
}

Anyone can give me an example/explain how I can go about covering this function with mockito ?