YamlMapping.toString() generates incorrect structure when printing nested fields with same keys

[CoderYellow]

When parsing a YAML file that contains multiple nested path keys in different contexts, the output of YamlMapping.toString() incorrectly merges these fields, misrepresenting the actual structure.

✅ Input YAML

meta:
  credentials:
  - storage:
      path: /var/artipie/security1
      type: fs
    type: artipie
  repo_configs: repo
  storage:
    path: /var/artipie/
    type: fs

📋 Java Code

import com.amihaiemil.eoyaml.Yaml;
import com.amihaiemil.eoyaml.YamlMapping;

import java.io.File;
import java.io.IOException;

public class LocalTest {
    public static void main(String[] args) throws IOException {
        YamlMapping yamlMapping = Yaml.createYamlInput(new File(args[0])).readYamlMapping();
        System.out.println(yamlMapping);
    }
}

🧪 Expected Output

meta:
  credentials:
  - storage:
      path: /var/artipie/security1
      type: fs
    type: artipie
  repo_configs: repo
  storage:
    path: /var/artipie/
    type: fs

❌ Actual Output (Incorrect)

meta:
  credentials:
    -
      storage:
        path: /var/artipie/security1
        type: fs
      type: artipie
      path: /var/artipie/
  repo_configs: repo
  storage:
    path: /var/artipie/security1        # ← this is wrong
    type: fs

[CoderYellow]

you can cross check with jackson lib

import com.amihaiemil.eoyaml.Yaml;
import com.amihaiemil.eoyaml.YamlMapping;

import java.io.File;
import java.io.IOException;

public class LocalTest {
    public static void main(String[] args) throws IOException {
        YamlMapping yamlMapping = Yaml.createYamlInput(new File(args[0])).readYamlMapping();
        System.out.println(yamlMapping);
    }
}