io.swagger.v3.oas.annotations.Webhook does not work when defined on the method level

[AlexanderBartash]

Describe the bug
The io.swagger.v3.oas.annotations.Webhook has @Target({METHOD, ANNOTATION_TYPE})

/**
 * The annotation may be used to define a method as an OpenAPI Webhook.
 *
 * @see <a target="_new" href="https://github.com/OAI/OpenAPI-Specification/blob/3.1.1/versions/3.1.1.md#oas-webhooks">Webhook (OpenAPI specification)</a>
 * @see io.swagger.v3.oas.annotations.OpenAPIDefinition
 **/
@Target({METHOD, ANNOTATION_TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Inherited
@OpenAPI31
public @interface Webhook {
    /**
     * Provides the name related to this webhook.
     * @return webhook name
     */
    String name();

    /**
     * Provides the operation related to this webhook.
     * @return webhook operation
     */
    Operation operation();

Which is a bit misleading because SpringDoc seems to be searching only for io.swagger.v3.oas.annotations.Webhooks on the class level and never tries to resolve annotations on the method level.

• springdoc-openapi/springdoc-openapi-starter-common/src/main/java/org/springdoc/core/service/OpenAPIService.java

  Line 542 in bce44db

  public Webhooks[] getWebhooks() {

• springdoc-openapi/springdoc-openapi-starter-common/src/main/java/org/springdoc/api/AbstractOpenApiResource.java

  Line 525 in bce44db

  protected void calculateWebhooks(OpenAPI calculatedOpenAPI, Locale locale) {

To Reproduce
Steps to reproduce the behavior:

• Try to use io.swagger.v3.oas.annotations.Webhook on the method level, as per its target .

Expected behavior

• Either log a warning that the annotation should be on the class level or support them on the method level too.

Workaround

• Use io.swagger.v3.oas.annotations.Webhooks on class level on any Spring Bean and add the webhooks as its child (nested) io.swagger.v3.oas.annotations.Webhook annotations.