com_baeldung_boot_repository_FooRepositoryIntegrationTest_java
org.springframework.core.convert.support.ConversionUtils
 -> java.lang.String.trim(): java.lang.String -> java.lang.String.isEmpty(): boolean -> java.lang.String.toLowerCase(): java.lang.String -> java.util.Set.contains(java.lang.Object): boolean -> java.util.Set.contains(java.lang.Object): boolean