function extractOptionsJSDoc( comments ) {
	var comment;
	var i;
	for ( i = 0; i < comments.length; i++ ) {
		comment = comments[ i ];
		if ( comment.type === 'Block' && RE_JSDOC.test( comment.value ) ) {
			return comment.value;
		}
	}
	return null;
}
Returns the JSDoc comment containing the function options.

@private
@param {ObjectArray} comments - array of comment objects
@returns {(string|null)} JSDoc options comment