Get protocols that are implemented by the Element type of an array

[wvteijlingen]

If I have an array of a certain Element type, how can I figure out if that Element type implements a protocol?

For example: Given this input, how can I figure out which one of these generics implement SomeProtocol?

struct Foo: SomeProtocol {}

struct Bar {
  var arrayOfFoos = [Foo]
  var arrayOfStrings = [String]
}

This doesn't seem to work:

{% for type in types.types %}
  {% for variable in type.storedVariables where variable.typeName.isArray %}

    {% if variable.typeName.generic.typeParameters.first.implements.SomeProtocol %}
      // {{variable.name}} implements SomeProtocol
    {% else %}
      // {{variable.name}} does not implement SomeProtocol
    {% endif %}

  {% endfor %}
{% endfor %}

The output I'm looking for:

// arrayOfFoos implements SomeProtocol
// arrayOfStrings does not implement SomeProtocol