original_string: public function addInterface(string $interfaceName, string $alias = null)
      {
          $this->interfaces[] = $this->addUse($interfaceName, $alias);
      }
code: public function addInterface(string $interfaceName, string $alias = null)
      {
          $this->interfaces[] = $this->addUse($interfaceName, $alias);
      }
code_tokens: public function addInterface ( string $ interfaceName , string $ alias = null ) { $ this -> interfaces [ ] = $ this -> addUse ( $ interfaceName , $ alias ) ; }
docstring: Adds an interface
  
  @param string $interfaceName
  @param string $alias
  
  @throws DuplicateUseWithAliasException
docstring_tokens: Adds an interface