com_baeldung_hamcrest_HamcrestFileUnitTest_java
org.hamcrest.TypeSafeDiagnosingMatcher
 -> java.lang.Class.isInstance(java.lang.Object): boolean -> java.io.File.length(): long -> java.lang.Long.valueOf(long): java.lang.Long -> java.lang.Object.getClass(): java.lang.Class -> java.lang.Class.isArray(): boolean -> java.lang.Object.equals(java.lang.Object): boolean