Import via clipboard into Insomnia, and note the folders, requests, default Content-Type header, and environments created

example.yaml

openapi: 3.0.0
info:
  version: 1.0.2
  title: Example
tags:
  - name: folder one  # converted to folders
  - name: folder two
servers:
  - url: https://petstore.swagger.io/v2    # converted to scheme, host, base_path env variables
paths:
  /pet:
    post:                                  # operation
      tags:
          - folder one                     # add to folder
      summary: Add a new pet to the store  # request name
      operationId: addPet                  # should be unique
      parameters:
        - in: header
          name: Content-Type
          schema:
            type: string
            default: application/json      # https://swagger.io/docs/specification/media-types/
          required: true                   # enabled by default
    put:
      tags:
        - folder one
      summary: Update an existing pet
      operationId: updatePet               # should be unique
      parameters:
        - in: header
          name: Content-Type
          schema:
            type: string
            default: text/html
          required: true
  /pet/findByStatus:
    get:
      tags:
        - folder two
      summary: Finds Pets by status
      description: Multiple status values can be provided with comma separated strings
      operationId: findPetsByStatus         # should be unique
      parameters:
        - name: status
          in: query
          description: Status values that need to be considered for filter
          required: true
          explode: true
          schema:
            type: array
            items:
              type: string
              enum:
                - available
                - pending
                - sold
              default: available
  "/pet/{variable}":
    get:
      tags:
        - folder two
      summary: Query with variable
security:
  - bearerAuth: []
components:
  securitySchemes:
    bearerAuth:           # https://swagger.io/docs/specification/authentication/bearer-authentication/
      type: http
      scheme: bearer

Folder, name, Content-Type header

Insomnia currently doesn't handle the bearerToken definition correctly (bottom, v7.1.1), but in the next release (top), it will add an environment variable for the token.