original_string: public function getTag($tag)
      {
          return isset($this->tags[$tag]) ? $this->tags[$tag] : null;
      }
code: public function getTag($tag)
      {
          return isset($this->tags[$tag]) ? $this->tags[$tag] : null;
      }
code_tokens: public function getTag ( $ tag ) { return isset ( $ this -> tags [ $ tag ] ) ? $ this -> tags [ $ tag ] : null ; }
docstring: Get the value of a tag, or null if it doesn't exist.
  
  @param  string $tag The name of the tag
  @return mixed  The value of the tag or null
docstring_tokens: Get the value of a tag or null if it doesn t exist .