Function OGR_L_GetGeometryTypes 

pub unsafe extern "C" fn OGR_L_GetGeometryTypes(
    hLayer: OGRLayerH,
    iGeomField: c_int,
    nFlags: c_int,
    pnEntryCount: *mut c_int,
    pfnProgress: GDALProgressFunc,
    pProgressData: *mut c_void,
) -> *mut OGRGeometryTypeCounter