code: private void putHead(String key, TemplateSubPatternAssociation assoc)
    {
  
      if (key.equals(PsuedoNames.PSEUDONAME_TEXT))
        m_textPatterns = assoc;
      else if (key.equals(PsuedoNames.PSEUDONAME_ROOT))
        m_docPatterns = assoc;
      else if (key.equals(PsuedoNames.PSEUDONAME_COMMENT))
        m_commentPatterns = assoc;
  
      m_patternTable.put(key, assoc);
    }
docs: Get the head of the assocation list that is keyed by target.
  
  @param key
  @param assoc