davsclaus edited a comment on issue #631:
URL: https://github.com/apache/camel-k-runtime/issues/631#issuecomment-791450040
I wonder if we need something like this with route template DSL
```
routeTemplate("myTemplate").templateParameter("foo").templateOptionalParameter("maxKeep")
.from("direct:{{foo}}")
.to("mock:result?retainFirst={{maxKeep}}");
```
As then you make it standout in the parameter definitions in the top which
are required, and which are optional.
Then in the route DSL you just use {{key}} where its in use. Then you dont
need to remember to use ? for optional. However this requires camel-core to
transform the DSL by automatic replacing `{{maxKeep}}` to `{{?maxKeep}}` as it
was declared as optional. And for this I need to add a new hook into the
properties component
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