Problem Statement/Rationale

Import statements appear to be not working as intended for all languages. Some seem to be half-working (e.g Java still includes `import org.bson.Document;` but does not include import mongo client.{}

Steps to Reproduce

Try exporting a query to Node/Python/Java/C# (not tested yet)/Ruby and notice the missing imports. Some languages like Python & Java include other libs like bson.Document for Java and datetime for python but don't include the mongo client. 

Expected Results

All import statements necessary are included when `Include Import Statement` is toggled on. 

For example, Java with Import Statements and Driver Syntax should include:

import org.bson.Document;
import com.mongodb.MongoClient;
import com.mongodb.MongoClientURI;
import com.mongodb.client.MongoCollection;
import com.mongodb.client.MongoDatabase;
import org.bson.conversions.Bson;
import java.util.concurrent.TimeUnit;
import org.bson.Document;

and one of the following (depending on the export type)

import com.mongodb.client.AggregateIterable;

import com.mongodb.client.FindIterable;

**

Actual Results

What do you observe is happening?

Most of the expected export statements are missing:

import org.bson.Document;

Additional Notes

Any additional information that may be useful to include.