code: protected void ensureSizeOfIndex(int namespaceID, int LocalNameID)
    {
  
      if (null == m_elemIndexes)
      {
        m_elemIndexes = new int[namespaceID + 20][][];
      }
      else if (m_elemIndexes.length <= namespaceID)
      {
        int[][][] indexes = m_elemIndexes;
  
        m_elemIndexes = new int[namespaceID + 20][][];
  
        System.arraycopy(indexes, 0, m_elemIndexes, 0, indexes.length);
      }
  
      int[][] localNameIndex = m_elemIndexes[namespaceID];
  
      if (null == localNameIndex)
      {
        localNameIndex = new int[LocalNameID + 100][];
        m_elemIndexes[namespaceID] = localNameIndex;
      }
      else if (localNameIndex.length <= LocalNameID)
      {
        int[][] indexes = localNameIndex;
  
        localNameIndex = new int[LocalNameID + 100][];
  
        System.arraycopy(indexes, 0, localNameIndex, 0, indexes.length);
  
        m_elemIndexes[namespaceID] = localNameIndex;
      }
  
      int[] elemHandles = localNameIndex[LocalNameID];
  
      if (null == elemHandles)
      {
        elemHandles = new int[128];
        localNameIndex[LocalNameID] = elemHandles;
        elemHandles[0] = 1;
      }
      else if (elemHandles.length <= elemHandles[0] + 1)
      {
        int[] indexes = elemHandles;
  
        elemHandles = new int[elemHandles[0] + 1024];
  
        System.arraycopy(indexes, 0, elemHandles, 0, indexes.length);
  
        localNameIndex[LocalNameID] = elemHandles;
      }
    }
docs: Ensure that the size of the element indexes can hold the information.
  
  @param namespaceID Namespace ID index.
  @param LocalNameID Local name ID.