Method extend

datafusion/expr/src/window_state.rs:281–285

(&mut self, batch: &RecordBatch)

    }

    pub fn extend(&mut self, batch: &RecordBatch) -> Result<()> {
        self.record_batch =
            concat_batches(&self.record_batch.schema(), [&self.record_batch, batch])?;
        Ok(())
    }

    pub fn set_most_recent_row(&mut self, batch: RecordBatch) {
        // It is enough for the batch to contain only a single row (the rest