JSON reference in $ref isn't acknowledged

I initially created this issue in swagger-codegen's repo.

Description

It looks like I am having a couple issues.

1. $ref: '#/definitions/Tenant/properties/name' gets rendered in the Tenant model with type Tenantpropertiesname
2. The rendered Tenant model only has a name property. The Tenant definition below has 6 total properties which do not make it into the rendered model.
3. Replacing $ref: '#/definitions/Tenant/properties/name' with a simple type: string fixes the type issue but still leaves a relatively empty Tenant model.
4. 3 is caused due to a parameter name colliding with a root level definition name. Changing either one generates the correct models. If the names are the same then the parameter model will take precedence.

@property
    def name(self):
        """
        Gets the name of this Tenant.

        :return: The name of this Tenant.
        :rtype: Tenantpropertiesname
        """
        return self._name

Swagger-codegen version

2.2.3

Swagger declaration file content or url

patch:
      description: Update a tenant record.
      operationId: update
      tags:
      - tenants
      parameters:
      - $ref: "#/parameters/id"
      - in: body
        name: tenant
        description: The tenant properties to update
        schema:
          type: object
          required:
            - name
          properties:
            name:
              $ref: '#/definitions/Tenant/properties/name'

definitions:
  Tenant:
    type: object
    required:
      - name
      - handle
    properties:
      id:
        type: integer
        format: int32
        readOnly: true
      name:
        type: string
      handle:
        type: string
        pattern: '^[a-zA-Z0-9-]{0,62}$'
      createdAt:
        type: string
        format: date-time
        readOnly: true
      updatedAt:
        type: string
        format: date-time
        readOnly: true
      deletedAt:
        type: string
        format: date-time
        readOnly: true

Command line used for generation

swagger-codegen generate --input-spec fetched/tenant-service.yaml --lang python --output sdk

Steps to reproduce

Related issues/PRs

I am not able to find a related issue.

Suggest a fix/enhancement

Unsure.

Reproduce the issue with fetched/tenant-service.yaml using swagger-codegen generate --input-spec fetched/tenant-service.yaml --lang python --output sdk, then inspect the generated Tenant model and the handling of the nested $ref. Done means the property reference resolves to the expected string type, all six Tenant properties remain present, and a parameter name cannot replace the root Tenant definition.