[line 3508]
<span class="constraint Required">This field is required and should not be {@code null}.</span>
Returns a page of opportunities that match the query described by the specified BulkOpportunitySelector.
The selector must specify a Paging value, with {@code numberResults} set to 20 or less. Large result sets must be composed through multiple calls to this method, advancing the Paging {@code startIndex} value by {@code numberResults} with each call.
BulkOpportunityService is available only to a limited set of advertisers. If you are not eligible to use this service, you will receive an error when calling it. Addtionally, please read this <a href="https://adwords.google.com/support/aw/bin/answer.py?hl=en&answer=1152907"> important notice</a> before you use the results returned by this API.
