How to set Gutter marker for all lines in react-codemirror2?

Question

I'm using react-codemirror2 to implement a code editor. I want to set the gutter marker for all the lines.

We can use setGutterMarker method to set gutterMaker for one line.

editor.setGutterMarker(1, 'marker', document.createTextNode("ø"))

But I want to know how to set it for all the lines. (even if the user adds new lines, it should set the gutter marker for that line)