original_string: public function pushField(Field $field)
      {
          $field = $this->formatField($field);
  
          $this->fields->push($field);
  
          return $this;
      }
code: public function pushField(Field $field)
      {
          $field = $this->formatField($field);
  
          $this->fields->push($field);
  
          return $this;
      }
code_tokens: public function pushField ( Field $ field ) { $ field = $ this -> formatField ( $ field ) ; $ this -> fields -> push ( $ field ) ; return $ this ; }
docstring: Add a field to form.
  
  @param Field $field
  
  @return $this
docstring_tokens: Add a field to form .