default_api_snippet.rb

def create_pets_with_http_info(opts = {})
  if @api_client.config.debugging
    @api_client.config.logger.debug "Calling API: PetsApi.create_pets ..."
  end
  # resource path
  local_var_path = "/pets".sub('{format}','json')

  # query parameters
  query_params = {}

  # header parameters
  header_params = {}

  # HTTP header 'Accept' (if needed)
  local_header_accept = ['application/json']
  local_header_accept_result = @api_client.select_header_accept(local_header_accept) and header_params['Accept'] = local_header_accept_result

  # HTTP header 'Content-Type'
  local_header_content_type = ['application/json']
  header_params['Content-Type'] = @api_client.select_header_content_type(local_header_content_type)

  # form parameters
  form_params = {}
  form_params["isDog"] = opts[:'is_dog'] if opts[:'is_dog']

  # http body (model)
  post_body = nil
        auth_names = []
  data, status_code, headers = @api_client.call_api(:POST, local_var_path,
    :header_params => header_params,
    :query_params => query_params,
    :form_params => form_params,
    :body => post_body,
    :auth_names => auth_names)
  if @api_client.config.debugging
    @api_client.config.logger.debug "API called: PetsApi#create_pets\nData: #{data.inspect}\nStatus code: #{status_code}\nHeaders: #{headers}"
  end
  return data, status_code, headers
end

schema.json

{
  "swagger": "2.0",
  "info": {
    "version": "1.0.0",
    "title": "Swagger Petstore",
    "license": {
      "name": "MIT"
    }
  },
  "host": "petstore.swagger.io",
  "basePath": "/v1",
  "schemes": [
    "http"
  ],
  "consumes": [
    "application/json"
  ],
  "produces": [
    "application/json"
  ],
  "paths": {
    "/pets": {
      "post": {
        "summary": "Create a pet",
        "operationId": "createPets",
        "tags": [
          "pets"
        ],
        "parameters": [
          {
            "name": "isDog",
            "in": "formData",
            "required": false,
            "type": "boolean"
          }
        ],
        "responses": {
          "201": {
            "description": "Null response"
          }
        }
      }
    }
  }
}