`OpenApiExampleProperty` doesn't support lists within another `OpenApiExampleProperty`

[NKWBTB]

Describe the feature
The following annotation would give compilation error

@OpenApiContent(
  exampleObjects = {
    @OpenApiExampleProperty(
        name = "metadata",
        objects = {
          @OpenApiExampleProperty(name = "source", value = "document"),
          @OpenApiExampleProperty(name = "author", value = "John Doe"),
          @OpenApiExampleProperty(
              name = "tags",
              objects = {
                @OpenApiExampleProperty(value = "important"),
                @OpenApiExampleProperty(value = "research")
              })
        })
  }
)

Error message:

java.lang.IllegalArgumentException: Example object must have a name (ExampleProperty(name=-- This string represents a null value and shouldn't be used --, value=important, objects=[]))

Additional context
Related issue: #193

The list annotation can only work for a simple list.

@OpenApiContent(
      exampleObjects = {
            @OpenApiExampleProperty(value = "important"),
            @OpenApiExampleProperty(value = "research")
      }
)