Couchbase Lite Swift Join documents of more than two types

Mobile Couchbase Lite
1

So far i can only perform join on documents of two different types follows as follows

.join(
Join.join(DataSource.database(database!).as(“route”))
.on(
Meta.id.from(“airline”)
.equalTo(Expression.property(“airlineid”).from(“route”))
)
)

Now i want to add another join. How can i perform this. Thank you

2

Currently we don’t support it, but we are considering this for future release.