Fix checkstyleMain

Author: codeconsole

grails-datastore-core/src/main/groovy/org/grails/datastore/mapping/model/AuditMetadataUtils.java

@@ -22,6 +22,7 @@
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import org.springframework.util.ReflectionUtils;
 
 import org.grails.datastore.mapping.config.AuditMetadataType;