original_string: public function getFilter($key, $default_value = '') {
  		if ($this->filters->has($key)) {
  			return $this->filters[$key];
  		}
  
  		return $default_value;
  	}
code: public function getFilter($key, $default_value = '') {
  		if ($this->filters->has($key)) {
  			return $this->filters[$key];
  		}
  
  		return $default_value;
  	}
code_tokens: public function getFilter ( $ key , $ default_value = '' ) { if ( $ this -> filters -> has ( $ key ) ) { return $ this -> filters [ $ key ] ; } return $ default_value ; }
docstring: Get single filter by key
  
  @param $key
  @param string $default_value Default value if key is not found
  
  @return mixed|string
docstring_tokens: Get single filter by key