public function dumpStack($index = null, $default = null)
    {
        if (array_key_exists($index, $this->registry_stacks)) {
            return $this->registry_stacks[$index];
        }
        return $default;
    }
public function dumpStack($index = null, $default = null)
    {
        if (array_key_exists($index, $this->registry_stacks)) {
            return $this->registry_stacks[$index];
        }
        return $default;
    }
public function dumpStack ( $ index = null , $ default = null ) { if ( array_key_exists ( $ index , $ this -> registry_stacks ) ) { return $ this -> registry_stacks [ $ index ] ; } return $ default ; }
Get a full stack from registry stacks

@param   string  $index      The stack index
@param   mixed   $default    The default value to return if it is not in registry (default is NULL)
@return  mixed   The requested stack entry if so
Get a full stack from registry stacks