org.apache.hc.core5.net.URIBuilder - Allow to configure plusAsBlank

When upgrading from Http Client v4 to v5 then the URIBuilder has changed a default value for the plusAsBlank option.

In v4 the default is true

org.apache.http.client.utils.URLEncodedUtils.decodeFormFields()
~~~
return urlDecode(content, charset != null ? charset : Consts.UTF_8, true);
~~~

In v5 the default is changed to false

org.apache.hc.core5.net.URIBuilder.digestURI()
~~~
this.queryParams = parseQuery(uri.getRawQuery(), charset, false);
~~~

I wonder if the URIBuilder could have some kind of flag that can be set to set whether to use true or false.

import org.apache.hc.core5.http.NameValuePair;
import org.apache.hc.core5.http.message.BasicNameValuePair;
import org.apache.hc.core5.net.URIBuilder;

        URIBuilder uriBuilder;
        uriBuilder = new URIBuilder("http://dummy/demo+demo?sample=sample+sample");
        LOG.info("uri="+uriBuilder.toString());
        List<NameValuePair> queryParameters = uriBuilder.getQueryParams();
        queryParameters.add(new BasicNameValuePair("Greeting", "hello"));
        uriBuilder.setParameters(queryParameters);
        LOG.info("uri="+uriBuilder.toString());