There are lots of examples in the built in sample...
CTRL+I > import > examples.
If you give me a copy of your data (the buffer data you are feeding in) and what you need out 9the formatted data out of buffer-parser) I'll knock up a simple example.
Share your flow (select the relevant nodes in your flow then press CTRL+E)
```
paste your flow between 3 backticks - like this
```
EDIT... these are the examples included...