Where's the page token field in java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/SearchTextRequest.java

There's no page token field in the search text requests for google maps sdk.
`java-maps-places/proto-google-maps-places-v1/src/main/java/com/google/maps/places/v1/SearchTextRequest.java`

Please check.
