Adding a pointer beside the bar rod.

As you can see the bar rod it has a pointer which is pointing towards the bar rod.

Let me explain. I am using the bar to showcase the marks of the student and i'd like to put the pointer beside the bar rod which will indicate the 'personal best score' of the student. The package uses the custom painter and paints the entire chart so i'm unable to add it. Can anyone help me with this?

Start by reviewing the bar chart's custom painter and bar rod rendering mentioned in the issue, along with the existing bar rod configuration. Determine how a pointer beside a rod could represent a student's personal best score, then verify that it renders correctly without obscuring the chart. The issue does not name specific files or tests.

Written by the indexing model from the issue text.