@Schema example overrides previous one when using same model on two request fields

Given a request body like so:

data class SampleRequest(
    @Schema(example = """{"name": "John", "lastname": "Doe"}""")
    val personOne: PersonDto?,

    @Schema(example = """{"name": "Jane", "lastname": "Smith"}""")
    val personTwo: PersonDto?,
)

with the following PersonDto

data class PersonDto (
    private val name: String?,
    private val lastname: String?,
)

doesn't work as expected. example defined on the second field personTwo overrides the first one.

Actual output

{
     "personOne": {
        "name": "Jane",
        "lastname": "Smith"
    },
    "personTwo": {
        "name": "Jane",
        "lastname": "Smith"
    }
}

Expected output

{
    "personOne": {
        "name": "John",
        "lastname": "Doe"
    },
    "personTwo": {
        "name": "Jane",
        "lastname": "Smith"
    }
}

Versions
Spring Boot 2.7.7
Kotlin 1.7.10
Spring DOC OpenAPI 1.6.11
Swagger UI 4.14.0

No source files or tests are identified in the issue. Start by reproducing the Kotlin request-body example through Swagger Core's OpenAPI schema generation and compare the generated examples for personOne and personTwo. Done means each field retains its own example rather than sharing the second field's value.