rest-assured/src/main/java/io/restassured/config/HttpClientConfig.java
public HttpClientConfig addParams(Map<String, ?> httpClientParams) {
        notNull(httpClientParams, "httpClientParams");
        final Map<String, Object> newParams = new HashMap<String, Object>(this.httpClientParams);
        newParams.putAll(httpClientParams);
        return new HttpClientConfig(httpClientFactory, newParams, httpMultipartMode, shouldReuseHttpClientInstance, NO_HTTP_CLIENT, true);
    }
public HttpClientConfig addParams(Map<String, ?> httpClientParams) {
        notNull(httpClientParams, "httpClientParams");
        final Map<String, Object> newParams = new HashMap<String, Object>(this.httpClientParams);
        newParams.putAll(httpClientParams);
        return new HttpClientConfig(httpClientFactory, newParams, httpMultipartMode, shouldReuseHttpClientInstance, NO_HTTP_CLIENT, true);
    }
Add the given parameters to an already configured number of parameters.

@param httpClientParams The parameters.
@return An updated HttpClientConfig