There seems to be only one naming rule for all static read-only fields. Other field naming rules have public and non-public versions. I would suggest that this rule also needs public and non-public versions. For example, the following field declaration gets a naming suggestion to capitalize the "s" in the field name. Since this is a private field, I would think that the lower-case "s" would be appropriate in this case.
private static readonly int?[] supportedCollectionTypeIndicatorValues = new int?[] { 0, 1, 2, 3, 4, 5, 6 };
Issue was closed