public function getSubConfig($_)
    {
        $keys = $this->validateKeys(func_get_args());

        $subConfig = clone $this;
        $subConfig->reduceToSubKey($keys);

        return $subConfig;
    }
public function getSubConfig($_)
    {
        $keys = $this->validateKeys(func_get_args());

        $subConfig = clone $this;
        $subConfig->reduceToSubKey($keys);

        return $subConfig;
    }
public function getSubConfig ( $ _ ) { $ keys = $ this -> validateKeys ( func_get_args ( ) ) ; $ subConfig = clone $ this ; $ subConfig -> reduceToSubKey ( $ keys ) ; return $ subConfig ; }
Get a new config at a specific sub-level.

@since 0.1.13

@param string|array $_ List of keys.

@return ConfigInterface
@throws KeyNotFoundException If an unknown key is requested.
Get a new config at a specific sub - level .