How to use

count

method

in

io.vertx.ext.mongo.MongoService

public io.vertx.rxjava.ext.mongo.MongoService count(String collection, JsonObject query, Handler<AsyncResult<Long>> resultHandler) { 
 delegate.count(collection, query, resultHandler);
 return this;
}

public static io.vertx.ext.mongo.MongoService count(io.vertx.ext.mongo.MongoService j_receiver, java.lang.String collection, java.util.Map<String, Object> query, io.vertx.core.Handler<io.vertx.core.AsyncResult<java.lang.Long>> resultHandler) {
 io.vertx.core.impl.ConversionHelper.fromObject(j_receiver.count(collection,
  query != null ? io.vertx.core.impl.ConversionHelper.toJsonObject(query) : null,
  resultHandler != null ? new io.vertx.core.Handler<io.vertx.core.AsyncResult<java.lang.Long>>() {
  public void handle(io.vertx.core.AsyncResult<java.lang.Long> ar) {
   resultHandler.handle(ar.map(event -> event));
  }
 } : null));
 return j_receiver;
}
public static io.vertx.ext.mongo.MongoService remove(io.vertx.ext.mongo.MongoService j_receiver, java.lang.String collection, java.util.Map<String, Object> query, io.vertx.core.Handler<io.vertx.core.AsyncResult<java.lang.Void>> resultHandler) {