private void handleHeaders(RequestBuilder builder) {
		for (HttpHeader header : headers.values()) {
			builder.addHeader(header.getName(), header.serializeValues());
		}
	}
private void handleHeaders(RequestBuilder builder) {
		for (HttpHeader header : headers.values()) {
			builder.addHeader(header.getName(), header.serializeValues());
		}
	}
private void handleHeaders ( RequestBuilder builder ) { for ( HttpHeader header : headers . values ( ) ) { builder . addHeader ( header . getName ( ) , header . serializeValues ( ) ) ; } }
Add request headers.

@param builder The pending HTTP request.
@see RequestBuilder#addHeader(String, String)
Add request headers .