‘Gutter’ is usually used to mean the area where the line numbers are in a text area. I don’t really understand what you mean by it in this post though.
I guess I didn’t explain well. It does not correspond to gutter, but I want to bring the text value of the area where the gutter is caught in the codemirror.
For example
The first gutter area
/**
test1
*/
I wonder if there is a function or method to get this annotation value.