src/Net/URL2.php
private function _buildAuthorityAndPath($authority, $path)
    {
        if ($authority === false) {
            return $path;
        }

        $terminator = ($path !== '' && $path[0] !== '/') ? '/' : '';

        return '//' . $authority . $terminator . $path;
    }
private function _buildAuthorityAndPath($authority, $path)
    {
        if ($authority === false) {
            return $path;
        }

        $terminator = ($path !== '' && $path[0] !== '/') ? '/' : '';

        return '//' . $authority . $terminator . $path;
    }
Put authority and path together, wrapping authority
into proper separators/terminators.

@param string|bool $authority authority
@param string      $path      path

@return string