clientEncryption.Encrypt in C# uses a lot of memory relative to a somewhat large file

Working with Data Drivers
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7

I took a look at the clientEncryption.Encrypt method source code on GitHub and found a possible way to improve the memory management in the MongoDB.Driver.Encryption.ExplicitEncryptionLibMongoCryptController class.

The EncryptField and EncryptFieldAsync methods both call UnwrapValue, which is:

private BsonValue UnwrapValue(byte[] encryptedWrappedBytes)
{
    var rawDocument = new RawBsonDocument(encryptedWrappedBytes);
    return rawDocument["v"];
}

As RawBsonDocument is IDisposable, it should be surrounded by a using clause:

private BsonValue UnwrapValue(byte[] encryptedWrappedBytes)
{
    using var rawDocument = new RawBsonDocument(encryptedWrappedBytes);
    return rawDocument["v"];
}

Not sure whether it could solve the issue, or not, but there may be something to explore further?