private function add_sections()
{
$this->add_section(new Admin_Apple_Settings_Section_API($this->page_name));
$this->add_section(new Admin_Apple_Settings_Section_Post_Types($this->page_name));
$this->add_section(new Admin_Apple_Settings_Section_Formatting($this->page_name));
$this->add_section(new Admin_Apple_Settings_Section_Advanced($this->page_name));
$this->add_section(new Admin_Apple_Settings_Section_Developer_Tools($this->page_name));
}