original_string: public function unregisterFunction($name) {
  		if( isset($this->env->functions[$name]) )
  			unset($this->env->functions[$name]);
  	}
code: public function unregisterFunction($name) {
  		if( isset($this->env->functions[$name]) )
  			unset($this->env->functions[$name]);
  	}
code_tokens: public function unregisterFunction ( $ name ) { if ( isset ( $ this -> env -> functions [ $ name ] ) ) unset ( $ this -> env -> functions [ $ name ] ) ; }
docstring: Removed an already registered function
  
  @param  string $name function name
docstring_tokens: Removed an already registered function