$cache_modes = array(
    array( 'value' => 'none',      'label' => esc_html__( 'No Caching', 'maera' ) ),
    array( 'value' => 'object',    'label' => esc_html__( 'WP Object Caching', 'maera' ) ),
    array( 'value' => 'transient', 'label' => esc_html__( 'Transients', 'maera' ) ),
    array( 'value' => 'default',   'label' => esc_html__( 'Default', 'maera' ) ),