Sets multiple headers on the request.
<p>
Only sets those headers provided, does not remove
headers that exist on request and are not provided in the
parameter for this method.
<p>
Convenience method vs calling {@link #setHeader(string, List)} multiple times.
Sets multiple headers on the request. <p> Only sets those headers provided, does not remove headers that exist on request and are not provided in the parameter for this method. <p> Convenience method vs calling {@link #setHeader(string, List)} multiple times.
@param headers the headers to set