/**
 * Resolve bean definition from class definition if applicable.
 *
 * @param bytes class definition.
 * @return the definition or null if not a spring bean
 * @throws IOException
 */
public BeanDefinition resolveBeanDefinition(byte[] bytes) throws IOException {
    Resource resource = new ByteArrayResource(bytes);
    resetCachingMetadataReaderFactoryCache();
    MetadataReader metadataReader = getMetadataReaderFactory().getMetadataReader(resource);

    if (isCandidateComponent(metadataReader)) {
        ScannedGenericBeanDefinition sbd = new ScannedGenericBeanDefinition(metadataReader);
        sbd.setResource(resource);
        sbd.setSource(resource);
        if (isCandidateComponent(sbd)) {
            LOGGER.debug("Identified candidate component class '{}'", metadataReader.getClassMetadata().getClassName());
            return sbd;
        } else {
            LOGGER.debug("Ignored because not a concrete top-level class '{}'", metadataReader.getClassMetadata().getClassName());
            return null;
        }
    } else {
        LOGGER.trace("Ignored because not matching any filter '{}' ", metadataReader.getClassMetadata().getClassName());
        return null;
    }
}