+++ /dev/null
-/*
- * Sone - Identified.java - Copyright © 2013–2016 David Roden
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-package net.pterodactylus.sone.data;
-
-import javax.annotation.Nonnull;
-
-import com.google.common.base.Function;
-import com.google.common.base.Optional;
-
-/**
- * Interface for all objects that expose an ID.
- */
-public interface Identified {
-
- /** Function to extract the ID from an optional. */
- public static final Function<Optional<? extends Identified>, Optional<String>> GET_ID = new Function<Optional<? extends Identified>, Optional<String>>() {
-
- @Override
- @Nonnull
- public Optional<String> apply(Optional<? extends Identified> identified) {
- return (identified == null) ? Optional.<String>absent() : (identified.isPresent() ? Optional.of(identified.get().getId()) : Optional.<String>absent());
- }
- };
-
- /**
- * Returns the ID of this element.
- *
- * @return The ID of this element
- */
- public String getId();
-
-}
--- /dev/null
+/*
+ * Sone - Identified.java - Copyright © 2013–2016 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.data
+
+/**
+ * Interface for all objects that expose an ID.
+ */
+interface Identified {
+
+ val id: String
+
+}