Function ostree_sys::ostree_repo_has_object

pub unsafe extern "C" fn ostree_repo_has_object(
    self_: *mut OstreeRepo, 
    objtype: OstreeObjectType, 
    checksum: *const c_char, 
    out_have_object: *mut gboolean, 
    cancellable: *mut GCancellable, 
    error: *mut *mut GError
) -> gboolean