BP_Group_Extension: _meta_box_display_callback ()

public function _meta_box_display_callback() {$group_id = isset($_GET['gid']) ?(int) $_GET['gid']: 0;$ = $ this - >屏幕屏幕['管理'];$ extension_slug = $ this - >弹头;$callback = function() use ($extension_slug， $group_id) {do_action(' bp_group_admin_meta_box_content_ ');extension_slug, group_id美元);};Add_meta_box ($screen['slug']， $screen['name']， $callback, get_current_screen()->id， $screen['metabox_context']， $screen['metabox_priority']);｝