Go usage with listener

[Kit]

Per the Go Target readme, we can implement a listener like so: 

//JSONparser.go
type TreeShapeListener struct {
        *parser.BaseJSONListener
}

func NewTreeShapeListener() *TreeShapeListener {
        return new(TreeShapeListener)
}

func (this *TreeShapeListener) EnterEveryRule(ctx antlr.ParserRuleContext) {
        fmt.Println(ctx.GetText())
}

The method ```EnterEveryRule``` is called for every rule. How can I overwrite the method for the other listener events, such as `func (s *BaseJSONListener) EnterObj(ctx *ObjContext) {}`? 

I've tried appending the following to `JSONParser.go`, but the listener event is either not triggered or my function definition is wrong:

func (this *TreeShapeListener) EnterJson(ctx antlr.ParserRuleContext) {

        fmt.Println("entered object!!")

}

Note that defining the function within the generated code works, however is obviously overwritten when I regenerate code with ANTLR.

Thanks,

Kit 

[Kit]

Solution: Use the correct context parameter. 

Instead of: 

func (this *TreeShapeListener) EnterJson(ctx antlr.ParserRuleContext) {
        fmt.Println("entered object!!")
}

use 

func (this *TreeShapeListener) EnterJson(ctx ctx.JsonContext) {
        fmt.Println("entered object!!")
}