Example:

var a = request.body;
var obj = {
    "body": a.a;
    "headers": a.b
}
foo(obj)

while I query the above code, there are two flow path:

1. a -> obj.body -> foo
2. a -> obj.headers -> foo

And I would like to show result 1 only, and filter result 2.
How can I solve the problem? Thanks