com_baeldung_freebuilder_EmployeeBuilderUnitTest_java
com.baeldung.freebuilder.Address$Builder
 -> java.util.Optional.ofNullable(java.lang.Object): java.util.Optional -> java.util.Optional.ifPresent(java.util.function.Consumer): void -> java.util.Optional.ofNullable(java.lang.Object): java.util.Optional -> java.util.Optional.ifPresent(java.util.function.Consumer): void -> java.util.Optional.ofNullable(java.lang.Object): java.util.Optional -> java.util.Optional.ifPresent(java.util.function.Consumer): void -> java.util.EnumSet.allOf(java.lang.Class): java.util.EnumSet -> java.util.EnumSet.contains(java.lang.Object): boolean -> java.util.Objects.requireNonNull(java.lang.Object): java.lang.Object -> java.util.EnumSet.remove(java.lang.Object): boolean -> java.util.Optional.ofNullable(java.lang.Object): java.util.Optional -> java.util.Optional.ifPresent(java.util.function.Consumer): void -> java.util.Optional.ofNullable(java.lang.Object): java.util.Optional -> java.util.Optional.ifPresent(java.util.function.Consumer): void