Improve rendering `oneOf: [string, string]`

[HenryGessau]

Content & configuration

Swagger/OpenAPI definition:

swagger: "2.0"
host: localhost
basePath: /v1
tags:
- name: subnets

paths:
 /subnets:
   post:
     tags:
     - subnets
     summary: Create a subnet
     parameters:
     - in: body
       name: body
       required: true
       schema:
         $ref: '#/definitions/Subnet'

definitions:
 CIDRv4:
   type: string
   description: An IPv4 address range in CIDR notation.
   pattern: '^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(3[0-2]|[1-2][0-9]|[0-9]))$'
   example: 10.9.8.0/24
 CIDRv6:
   type: string
   description: An IPv6 address range in CIDR notation.
   pattern: '^(?:(?:(?:[a-f0-9]{1,4}:){6}|(?=(?:[a-f0-9]{0,4}:){0,6}(?:[0-9]{1,3}\.){3}[0-9]{1,3}(?![:.\w]))(([0-9a-f]{1,4}:){0,5}|:)((:[0-9a-f]{1,4}){1,5}:|:)|::(?:[a-f0-9]{1,4}:){5})(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)|(?:[a-f0-9]{1,4}:){7}[a-f0-9]{1,4}|(?=(?:[a-f0-9]{0,4}:){0,7}[a-f0-9]{0,4}(?![:.\w]))(([0-9a-f]{1,4}:){1,7}|:)((:[0-9a-f]{1,4}){1,7}|:)|(?:[a-f0-9]{1,4}:){7}:|:(:[a-f0-9]{1,4}){7})(?![:.\w])\/(?:12[0-8]|1[01][0-9]|[1-9]?[0-9])$'
   example: 2001:DB8:8700:2010::/64
 SubnetCIDR:
   type: string
   oneOf:
   - $ref: '#/definitions/CIDRv4'
   - $ref: '#/definitions/CIDRv6'
 Subnet:
   type: object
   required:
   - cidr
   properties:
     cidr:
       $ref: '#/definitions/SubnetCIDR'

Swagger-UI configuration options:

 window.ui = SwaggerUIBundle({
   url: "subnet.yaml",
   dom_id: '#swagger-ui',
   defaultModelRendering: 'model',
   deepLinking: true,
   presets: [
     SwaggerUIBundle.presets.apis,
     SwaggerUIStandalonePreset
   ],
   plugins: [
     SwaggerUIBundle.plugins.DownloadUrl
   ],
   layout: "StandaloneLayout"
 });

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