kernel/lib/Mail.php
public function attachFile(string $sFileName, string $sContent, string $sType) : bool
	{
		$this->_aAttachments[] = array(
			"name" => $sFileName,
			"content" => $sContent,
			"type" => $sType
		);
		
		return true;
	}
public function attachFile(string $sFileName, string $sContent, string $sType) : bool
	{
		$this->_aAttachments[] = array(
			"name" => $sFileName,
			"content" => $sContent,
			"type" => $sType
		);
		
		return true;
	}
add a file to the mail

@access public private
@param  string $sFileName
@param  string $sContent
@param  string $sType
@return bool