Location required for component type extensions?

From the spec on component.name.type:

```
If the type is not recognized by the parser,
the component shall be ignored.
(Parsers are permitted to support additional types
as a conforming extension.)
```

From the spec on component.name.location:

```
This attribute is required for |component|\ s
that are not of :string:`"interface"` :attribute:`type`.
```

Do you think this is an intentional interaction? I am working on adding tests to our parser. Maybe `location` should be required on a closed set of specific types instead of the open set excluding `interface`?

Start by comparing the component.name.type and component.name.location requirements quoted in the issue, then inspect the parser tests mentioned in the report. Resolve whether the interaction is intentional and document the chosen rule in the specification, with tests covering recognized, unrecognized, and extension component types.

Written by the indexing model from the issue text.