start converting from bukkit to hytale

src/main/java/at/helpch/placeholderapi/replacer/Replacer.java

@@ -0,0 +1,50 @@
+/*
+ * This file is part of PlaceholderAPI
+ *
+ * PlaceholderAPI
+ * Copyright (c) 2015 - 2026 PlaceholderAPI Team
+ *
+ * PlaceholderAPI 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.
+ *
+ * PlaceholderAPI 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 at.helpch.placeholderapi.replacer;
+
+import java.util.function.Function;
+
+import at.helpch.placeholderapi.expansion.PlaceholderExpansion;
+import org.bukkit.OfflinePlayer;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+public interface Replacer {
+
+    @NotNull
+    String apply(@NotNull final String text, @Nullable final OfflinePlayer player,
+                 @NotNull final Function<String, @Nullable PlaceholderExpansion> lookup);
+
+
+    enum Closure {
+        BRACKET('{', '}'),
+        PERCENT('%', '%');
+
+
+        public final char head, tail;
+
+        Closure(final char head, final char tail) {
+            this.head = head;
+            this.tail = tail;
+        }
+    }
+
+}