code: public function setPageValue(string $name, $value): self
      {
          if (empty($value)) {
              unset($this->page[$name]);
              return $this;
          }
  
          $this->page[$name] = $value;
  
          return $this;
      }
docs: Set a value in the target page.
  
  @param string $name  The parameter name.
  @param mixed  $value The parameter value.
  
  @return self