Does anyone know how to distinguish whether it is the same variable in ast?


```javasript
const { parse, print, visit } = require('recast')

const ast = parse(`function test(samename){
samename(123);
var b = {
c: function (samename){
samename(456)
},
d: function() {
samename(789)
}
}
}`)

const funcAst = ast.program.body[0]

const arg = funcAst.params[0]

console.log(arg)

visit(funcAst, {
visitCallExpression(path) {
console.log(path.value.callee)
this.traverse(path)
}
})
```

Start with the parse(...) result and the visit(funcAst, ...) traversal shown in the issue, then inspect how the displayed call-expression callees relate to their surrounding functions. Determine how to distinguish the outer and inner samename bindings, and document or demonstrate a reliable way to identify them.

Written by the indexing model from the issue text.