diff --git a/plugin/src/main/groovy/org/unify4j/common/Auth4j.java b/plugin/src/main/groovy/org/unify4j/common/Auth4j.java
index bdbadb6..cd07098 100644
--- a/plugin/src/main/groovy/org/unify4j/common/Auth4j.java
+++ b/plugin/src/main/groovy/org/unify4j/common/Auth4j.java
@@ -3,7 +3,7 @@
 import org.unify4j.model.builder.HttpWrapBuilder;
 import org.unify4j.model.c.HttpHeaders;
 import org.unify4j.model.enums.AuthType;
-import org.unify4j.model.onlyrd.AbstractAuthClass;
+import org.unify4j.model.rd.AbstractAuthClass;
 import org.unify4j.model.response.WrapResponse;
 
 import java.util.Base64;
diff --git a/plugin/src/main/groovy/org/unify4j/common/Collection4j.java b/plugin/src/main/groovy/org/unify4j/common/Collection4j.java
index 22a5076..9ffa6cb 100644
--- a/plugin/src/main/groovy/org/unify4j/common/Collection4j.java
+++ b/plugin/src/main/groovy/org/unify4j/common/Collection4j.java
@@ -2,9 +2,11 @@
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+import org.unify4j.model.c.Pair;
 
 import java.lang.reflect.Array;
 import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -649,6 +651,29 @@ public static String toString(Collection<?> collections, String delimiter) {
         return builder.substring(delimiter.length());
     }
 
+    /**
+     * Creates an unmodifiable map from an array of Pair objects.
+     * <p>
+     * This method takes a variable number of Pair objects and constructs
+     * a thread-safe map (using ConcurrentHashMap) from these pairs. The
+     * resulting map is then wrapped with Collections.unmodifiableMap to
+     * ensure it cannot be modified after creation.
+     *
+     * @param <KeyT>   the type of keys maintained by the returned map
+     * @param <ValueT> the type of mapped values
+     * @param pairs    an array of Pair objects from which the map will be created
+     * @return an unmodifiable map containing the key-value pairs from the pairs array
+     * @throws NullPointerException if any of the keys or values in the pairs are null
+     */
+    @SafeVarargs
+    public static <KeyT, ValueT> Map<KeyT, ValueT> mapOf(Pair<KeyT, ValueT>... pairs) {
+        Map<KeyT, ValueT> map = new ConcurrentHashMap<>(pairs.length);
+        for (Pair<KeyT, ValueT> pair : pairs) {
+            map.put(pair.getKey(), pair.getValue());
+        }
+        return Collections.unmodifiableMap(map);
+    }
+
     /**
      * Throws UnsupportedOperationException if the list is not of type ArrayList.
      *
diff --git a/plugin/src/main/groovy/org/unify4j/model/c/Pair.java b/plugin/src/main/groovy/org/unify4j/model/c/Pair.java
new file mode 100644
index 0000000..e65eee8
--- /dev/null
+++ b/plugin/src/main/groovy/org/unify4j/model/c/Pair.java
@@ -0,0 +1,30 @@
+package org.unify4j.model.c;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+
+import java.io.Serializable;
+
+@SuppressWarnings({"ClassCanBeRecord"})
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class Pair<K, V> implements Serializable {
+    public Pair(K key, V value) {
+        super();
+        this.key = key;
+        this.value = value;
+    }
+
+    private final K key;
+    private final V value;
+
+    public K getKey() {
+        return key;
+    }
+
+    public V getValue() {
+        return value;
+    }
+
+    public static <K, V> Pair<K, V> of(K key, V value) {
+        return new Pair<>(key, value);
+    }
+}
\ No newline at end of file
diff --git a/plugin/src/main/groovy/org/unify4j/model/onlyrd/AbstractAuthClass.java b/plugin/src/main/groovy/org/unify4j/model/rd/AbstractAuthClass.java
similarity index 98%
rename from plugin/src/main/groovy/org/unify4j/model/onlyrd/AbstractAuthClass.java
rename to plugin/src/main/groovy/org/unify4j/model/rd/AbstractAuthClass.java
index 8407a25..9ef4bc6 100644
--- a/plugin/src/main/groovy/org/unify4j/model/onlyrd/AbstractAuthClass.java
+++ b/plugin/src/main/groovy/org/unify4j/model/rd/AbstractAuthClass.java
@@ -1,4 +1,4 @@
-package org.unify4j.model.onlyrd;
+package org.unify4j.model.rd;
 
 import org.unify4j.model.enums.AuthType;
 import org.unify4j.model.response.WrapResponse;