ImGui.NET/src/CodeGenerator/variants.json

{
    "ImFontAtlas_GetTexDataAsAlpha8": [
        {
            "name": "out_pixels",
            "type": "unsigned char**",
            "variants": [ "IntPtr*" ]
        }
    ],
    "ImFontAtlas_GetTexDataAsRGBA32": [
        {
            "name": "out_pixels",
            "type": "unsigned char**",
            "variants": [ "IntPtr*" ]
        }
    ]
}