original_string: protected function init($namespace = '', $defaultLifetime = null)
      {
          $this->namespace = (string) $namespace;
          $this->defaultLifetime = $this->convertTtl($defaultLifetime);
          $this->miss = new \stdClass;
      }
code: protected function init($namespace = '', $defaultLifetime = null)
      {
          $this->namespace = (string) $namespace;
          $this->defaultLifetime = $this->convertTtl($defaultLifetime);
          $this->miss = new \stdClass;
      }
code_tokens: protected function init ( $ namespace = '' , $ defaultLifetime = null ) { $ this -> namespace = ( string ) $ namespace ; $ this -> defaultLifetime = $ this -> convertTtl ( $ defaultLifetime ) ; $ this -> miss = new \ stdClass ; }
docstring: Always call from constructor.
  
  @param string $namespace
  @param null|int|\DateInterval $defaultLifetime
  @throws \Psr\SimpleCache\InvalidArgumentException|InvalidArgumentException
docstring_tokens: Always call from constructor .