Button Group

<?php
add_action( 'acf/include_fields', function() {
  if ( ! function_exists( 'acf_add_local_field_group' ) ) {
      return;
  }
  acf_add_local_field_group(
    [
      {
        "key": "my_field_group_",
        "title": "My Field Group with button_group",
        "show_in_graphql": 1,
        "graphql_field_name": "myFieldGroupWithButtonGroup",
        "map_graphql_types_from_location_rules": 0,
        "graphql_types": [
          "Page"
        ],
        "fields": [
          {
            "key": "my_field_",
            "label": "My Field",
            "name": "my_field",
            "type": "button_group",
            "show_in_graphql": 1,
            "graphql_field_name": "myFieldWithButtonGroup"
          }
        ],
        "location": [
          [
            {
              "param": "post_type",
              "operator": "==",
              "value": "page"
            }
          ]
        ]
      }
    ]
  );
});