val validateOpenApi by registering(ValidateTask::class) {
    group = "verification"
    description = "Validate openapi.yaml"
    recommend.set(true)
    input = "$rootDir/openapi.yaml"
}
val check by registering {
    dependsOn(validateOpenApi)
}

* What went wrong:
Some problems were found with the configuration of task ':validateOpenApi' (type 'ValidateTask').
  - Type 'ValidateTask' property 'inputSpec' of mutable type 'org.gradle.api.provider.Property' is writable.

    Reason: Properties of type 'org.gradle.api.provider.Property' are already mutable.

    Possible solution: Remove the 'setInputSpec' method.

    Please refer to https://docs.gradle.org/7.0/userguide/validation_problems.html#mutable_type_with_setter for more details about this problem.
  - Type 'ValidateTask' property 'recommend' of mutable type 'org.gradle.api.provider.Property' is writable.

    Reason: Properties of type 'org.gradle.api.provider.Property' are already mutable.

    Possible solution: Remove the 'setRecommend' method.

    Please refer to https://docs.gradle.org/7.0/userguide/validation_problems.html#mutable_type_with_setter for more details about this problem.

@get:InputFile
@PathSensitive(PathSensitivity.RELATIVE)
var inputSpec = project.objects.property<String>()

@Optional
@Input
var recommend = project.objects.property<Boolean?>()