Model class with no name breaks common language refiner

[darrelmiller]

       protected void MoveClassesWithNamespaceNamesUnderNamespace(CodeElement currentElement) {
            if(currentElement is CodeClass currentClass && 
                currentClass.Parent is CodeNamespace parentNamespace) {
                var childNamespaceWithClassName = parentNamespace.InnerChildElements
                                                                .OfType<CodeNamespace>()
                                                                .FirstOrDefault(x => x.Name
                                                                                    .EndsWith(currentClass.Name, StringComparison.InvariantCultureIgnoreCase));
                if(childNamespaceWithClassName != null) {
                    parentNamespace.InnerChildElements.Remove(currentClass);
                    childNamespaceWithClassName.AddClass(currentClass);
                }
            }
            CrawlTree(currentElement, MoveClassesWithNamespaceNamesUnderNamespace);
        }

CrawlTree will fail with elements that have a null name.

openapi: 3.0.0
info:
  title: "Todo API"
  version: "1.0.0"
paths:
  /todos: 
    get:
      operationId: todos_ListTodos
      parameters:
          - name: active
            in: query
            schema:
              type: boolean
          - name: keyword
            in: query
            schema:
              type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                title: collectionTodos
                type: object
                properties:
                  value:
                    items: 
                      $ref: "#/components/schemas/todo"

    post:
      operationId: todos_CreateTodo
      responses:
        '201':
          description: OK
  /todos/{todoId}:
    get:
      operationId: todos_GetTodo
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/todo"
    delete:
      operationId: todos_DeleteTodo
      responses:
        '200':
          description: OK
  /tag/{tagId}:
    get:
      operationId: todos_GetTag
      responses:
        '200':
          description: OK
components:
  schemas:
    entity:
      type: object
      properties:
        id: 
          type: string
    tag:
      type: object
      properties:
        id: 
          type: string
        displayName: 
          type: string
    todo:
      allOf:
        - $ref: "#/components/schemas/entity"
        - type: object
          properties:
            subject:
              type: string

AB#8849