title: cakephp 3 model is not associated error
body: <p>Tabel <code>coding</code></p>
  
  <pre>
  
  id |  level1  |  level2  |  title
  _____________________________________
  1  |  100     |  1       |  numberOne
  2  |  100     |  2       |  NumberTwo
  3  |  101     |  1       |  Compay
  4  |  101     |  2       |  association
  </pre>
  
  <p>Table <code>Organizations</code></p>
  
  <pre>
  id  | name  |  type  | level
  ____________________________
  1   | intel |  3     |  1 
  2   | IBM   |  4     |  2
  </pre>
  
  <p>Model <code>Organizations</code></p>
  
  <pre><code>class organizationsTable extends table
  {    
      public function initialize(array $config)
      {       
          $this-&gt;table('organizations');
          $this-&gt;primaryKey('id');
  
              $this-&gt;belongsTo('yyyy', [
                   'foreignKey' =&gt; 'type',
                   'className' =&gt; 'coding'    
                   ],
                   'xxxx', [
                   'foreignKey' =&gt; 'level',
                   'className' =&gt; 'coding'
             ]);
  
      }
  }
  </code></pre>
  
  <p>Controller</p>
  
  <pre><code>$organization-&gt;find('all')-&gt;contain(['yyyy'])-&gt;contain(['xxxx'])-&gt;toList()  ;
  </code></pre>
  
  <p>i write this but say error :<code>organizations is not associated with xxxx</code></p>
  
  <p>how can do Multiple relations to the same model in cakephp3?</p>