Unable to rename enums

I have an enum like this in C:

enum SHType : uint8_t {
  None,
  Any,
  Enum,
  Bool,
  ...
}

Turns into:

pub const SHType_None: SHType = 0;
pub const SHType_Any: SHType = 1;
pub const SHType_Enum: SHType = 2;
pub const SHType_Bool: SHType = 3;
...
pub type SHType = u8;

Which when used inside match blocks will generate:

warning: constant in pattern `SHType_Float3` should have an upper case name
   --> src\widgets\var_util.rs:194:9
    |
194 |         SHType_Float3 => {
    |         ^^^^^^^^^^^^^ help: convert the identifier to upper case: `SHTYPE_FLOAT3`

I have tried to use ParseCallbacks with enum_variant_name to rename the enum, but it only works on the variant part, not the type (turns into SHType_FLOAT3, instead of SHTYPE_FLOAT3)
I also tried to use item_name in addition which kind of works except it renames the actual type also to SHTYPE, which I want to keep regular, I just want to rename the constants. Anything I'm missing in bindgen that can do this or is it just something that is not possible yet?

Start by tracing ParseCallbacks::enum_variant_name and item_name, using the shown SHType example to see how each callback affects enum variants, constants, and the generated type name. Done means the constants can receive the requested uppercase names while the SHType type remains unchanged, with the generated bindings compiling without the reported naming warning.