Function ostree_sys::ostree_repo_commit_modifier_set_xattr_callback

pub unsafe extern "C" fn ostree_repo_commit_modifier_set_xattr_callback(
    modifier: *mut OstreeRepoCommitModifier, 
    callback: OstreeRepoCommitModifierXattrCallback, 
    destroy: GDestroyNotify, 
    user_data: gpointer
)