Generation of custom properties with lists and objects

[ir0nPotato]

Hi!

It's not an issue at all, I just want to ask if this feature exists. I'm trying to generate a custom property in the openapi file just as follows:

/hello:
    get:
      tags:
      - HelloApi
      description: Hello method
      operationId: helloWorld
      responses:
        "404":
          description: Not Found
          content:
            '*/*':
              schema:
                $ref: '#/components/schemas/ErrorResourceResponse'
        "200":
          description: OK
          content:
            '*/*':
              schema:
                type: string
      x-security:
        control:
           type: "X"
        operations:
           - AB12345678
           - AB34567890 

The thing is that, in this custom property 'x-security', I'm not being able to have subproperties that are lists or other objects, remaining as strings as shown below:

      x-security:
        control: "{\"type\": \"X\"}"
        operations: "AB12345678,AB34567890"

The code in Java that I've implemented is the next one:

import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.extensions.Extension;
import io.swagger.v3.oas.annotations.extensions.ExtensionProperty;
import io.swagger.v3.oas.annotations.security.SecurityRequirement;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;

@Tag(name = "HelloApi", description = "API ")
public interface HelloApi {
  @Operation(
    description = "Hello method to test api swagger generator",
    extensions = {
      @Extension(name = "x-security", properties = {
        @ExtensionProperty(name = "operations", value = "AB12345678,AB34567890"),
        @ExtensionProperty(name = "control", value = "{\"type\": \"X\"}")
      })
    }
  )
  @GetMapping("/hello")
  ResponseEntity<String> helloWorld();
}

Do you know if there is a way using this library to generate custom properties having children properties as lists or objects?

Thanks!