Unknown query parameters handling

[AnguIar]

It seems that free-form query parameters is not supported by the validator.
For this yaml:

      - in: query
        name: params
        required: false
        schema:
          type: object
          additionalProperties: {}
        example:
          user_id: 123456

The Swagger shows this for a valid request to send:

However, when I make the request I get Input validation error:

Error: Input validation error
    at _validateRequest (/home/roees/Desktop/CommonStorage/node_modules/openapi-validator-middleware/src/middleware.js:62:21)
{ .... }