code: public function addBlock(Mage_Core_Block_Abstract $block)
      {
          $blockInfo = Mage::getModel('sheep_debug/block');
          $blockInfo->init($block);
          $key = $blockInfo->getName();
  
          return $this->blocks[$key] = $blockInfo;
      }
docs: Adds block
  
  @param Mage_Core_Block_Abstract $block
  @return Sheep_Debug_Model_Block