delta-kernel: how to write data in a streaming way (row by row)

[tadamovsky]

In my usecase, we have a session over which we receive unknown number of records, one by one.
Each record is of the same known schema, and I'm looking for a way to insert these records to delta table with delta-kernel api.
Like previously, we used delta-standalone, and it worked like this:

• create new parquet file writer
• continue adding records to parquet, one by one over the whole session
• create delta transaction with AddFile
  But in current kernel api, looks like there is no simple way to do it? The user guide says, first create data in iterator
  CloseableIterator data = ...
  I can think of implementing iterator over some blocking queue where I will be adding records as I get them, is there any simpler or ready to use solution?
  Thanks.