In Atlas Stream Processing, we are supporting the ability for users to build dynamically their REST API call.  Currently, the only way to do this today is with $concat operators, and after 2 or 3 variables, this becomes highly messy to look at and code.  We are looking for a function such as the following:

{
$interpolateString:

{  template: "[https://foo.com/\{foo}

/{bar}/{baz}|https://www.google.com/url?q=https://foo.com/%7Bfoo%7D/%7Bbar%7D/%7Bbaz%7D&sa=D&source=docs&ust=1725021938329562&usg=AOvVaw3vMOA6NY9MeZT-IyMRSltt]",
vars:

{ foo: "foo", bar: $bar, baz: $baz }

}
}