Add documentation

Author: GauthamBanasandra

hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/tools/hdfs-get/hdfs-get.h

@@ -37,6 +37,9 @@ class Get : public CopyToLocal {
   ~Get() override = default;
 
 protected:
+  /**
+   * {@inheritdoc}
+   */
   [[nodiscard]] std::string GetToolName() const override;
 };
 } // namespace hdfs::tools