Example responses not shown in generated HTML2 artifacts (v 3.0.0 snapshot)

Description

I am comparing how the same spec file looks in the waggerhub editor and the static html created by
swaggen generate -i ./api.json -l html2 -o ./generatedDocs/.

• There html2 is missing the JSON examples for the responses
• Models are not rendered at all

Swagger-codegen version

3.0.0-SNAPSHOT

Swagger declaration file content or url

(for YAML code) or

"components": {
    "schemas": {
      "Tweet": {
        "type": "object",
        "required": [
          "id",
          "create_at"
        ],
        "properties": {
          "id": {
            "type": "string"
          },
          "created_at": {
            "type": "string"
          },
          "text": {
            "type": "string"
          },
          "user": {
            "type": "object",
            "$ref": "#/components/schemas/User"
          }
        },
        "example": {
          "id": "12234",
          "created_at": "Wed Jun 20 16:53:49 +0000 2018",
          "text": "Some great insight into the human condition",
          "user": {
            "$ref": "#/components/schemas/User/example"
          }
        }
      }
 }
}

(for JSON code), so it becomes more readable. If it is longer than about ten lines,
please create a Gist (https://gist.github.com) or upload it somewhere else and
link it here.
-->

Command line used for generation

swaggen generate -i ./twitter_api.json -l html2 -o ./generatedDocs/.

Steps to reproduce

do above and look at results

Related issues/PRs

Suggest a fix/enhancement

Start by reproducing the issue with swaggen generate -i ./twitter_api.json -l html2 -o ./generatedDocs/. and compare the generated HTML2 output with the SwaggerHub editor. Trace the HTML2 generation path for response examples and models; done means both JSON response examples and models appear in the generated static HTML.