Magento - Delete in Collection in one request

gistfile1.php

<?php
class Something_Asdf_Model_Resource_Halma_Collection
extends Mage_Core_Model_Resource_Db_Collection_Abstract
{
/**
     * delete all the entities in the collection
     *
     * @return $this
     */
    public function delete()
    {
        $id = array();
        foreach ($this->getItems() as $item) {
            $id[] = $item->getId();
        }
        if(empty($id))
        {
            return $this;
        }
        $quoted = $this->_getWriteAdapter()->quoteInto('IN (?)', $id);
        $this->_getWriteAdapter()->delete($this->getMainTable(), "id {$quoted}");
        return $this;
    }
    
    /**
     * 
     * @return type
     */
    protected function _getWriteAdapter()
    {
        if(is_null($this->_write))
        {
            $this->_write =  Mage::getSingleton('core/resource')->getConnection('core_write');
        }
        return $this->_write;
    }

It works!! Thanks 👍