private void setExtensions(io.swagger.v3.oas.annotations.Parameter parameterDoc, Parameter parameter, Locale locale) {
		if (parameterDoc.extensions().length > 0) {
			Map<String, Object> extensionMap = AnnotationsUtils.getExtensions(propertyResolverUtils.isOpenapi31(), parameterDoc.extensions());
			if (propertyResolverUtils.isResolveExtensionsProperties()) {
				Map<String, Object> extensionsResolved = propertyResolverUtils.resolveExtensions(locale, extensionMap);
				extensionsResolved.forEach(parameter::addExtension);
			}
			else {
				extensionMap.forEach(parameter::addExtension);
			}
		}
	}
Sets extensions.

@param parameterDoc the parameter doc
@param parameter    the parameter
@param locale       the locale
springdoc-openapi-starter-common/src/main/java/org/springdoc/core/service/GenericParameterService.java