Moving com.baeldung.modelmmaper package to java-collections-conversations module

java-collections-conversions-2/src/main/java/com/baeldung/modelmapper/UserPropertyMap.java

@@ -0,0 +1,34 @@
+package com.baeldung.modelmapper;
+
+import org.modelmapper.AbstractConverter;
+import org.modelmapper.Converter;
+import org.modelmapper.PropertyMap;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author sasam0320
+ * @description
+ * UserPropertyMap class instantiates the converter to map the data from the user list to the user name list.
+ * In the configuration method, we call a converter to do the mapping.
+ */
+public class UserPropertyMap extends PropertyMap<UserList, UserListDTO> {
+
+
+    Converter<List<User>, List<String>> converter = new AbstractConverter<List<User>, List<String>>() {
+
+        List<String> usernames = new ArrayList<>();
+
+        protected List<String> convert(List<User> users) {
+
+            users.forEach(user -> usernames.add(user.getUserName()));
+            return usernames;
+        }
+
+    };
+
+    @Override
+    protected void configure() {
+        using(converter).map(source.getUsers(), destination.getUsernames());
+    }
+}