final HttpPost httpPost = new HttpPost(tokenUrl);
                if (StringUtil.isNotBlank(tokenReqParams)) {
                    final HttpEntity httpEntity = parseRequestParameters(tokenReqParams, null, encoding);
                    httpPost.setEntity(httpEntity);
                }
                httpRequest = httpPost;
            } else {
                final StringBuilder buf = new StringBuilder(100);

                }

                HttpEntity httpEntity = null;
                try {
                    final HttpResponse response = closeableHttpClient.execute(request, new BasicHttpContext(httpClientContext));
                    httpEntity = response.getEntity();
                    consumer.accept(response, httpEntity);
                } catch (final Exception e) {

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;

import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScheme;
import org.apache.http.auth.AuthSchemeProvider;
import org.apache.http.auth.AuthScope;
import org.apache.http.client.AuthCache;

----

The _public_ constructor of `HttpClientWrapper` uses `HttpClient` as a parameter, so it is exposed to consumers and therefore belongs to the API. Note that `HttpGet` and `HttpEntity` are used in the signature of a _private_ method, and so they don't count towards making HttpClient an API dependency.