Here is a list of all documented variables with links to the class documentation for each member:

- u -

• unavailable : discord_core_api::guild_data
• unicodeEmoji : discord_core_api::create_guild_role_data, discord_core_api::modify_guild_role_data, discord_core_api::role_cache_data, discord_core_api::role_data
• unicodeName : discord_core_api::emoji_data
• unique : discord_core_api::create_channel_invite_data
• updatedAt : discord_core_api::guild_template_data
• url : discord_core_api::activity_data, discord_core_api::attachment_data, discord_core_api::embed_author_data, discord_core_api::embed_data, discord_core_api::embed_image_data, discord_core_api::embed_provider_data, discord_core_api::embed_thumbnail_data, discord_core_api::embed_video_data, discord_core_api::gateway_bot_data, discord_core_api::web_hook_data
• usageCount : discord_core_api::guild_template_data
• user : discord_core_api::ban_data, discord_core_api::emoji_data, discord_core_api::guild_member_cache_data, discord_core_api::guild_member_data, discord_core_api::guild_scheduled_event_user_data, discord_core_api::integration_data, discord_core_api::presence_update_data, discord_core_api::sticker_data, discord_core_api::team_members_object_data, discord_core_api::web_hook_data
• userCount : discord_core_api::guild_scheduled_event_data
• userId : discord_core_api::add_guild_member_data, discord_core_api::add_guild_member_role_data, discord_core_api::add_recipient_to_group_dmdata, discord_core_api::add_thread_member_data, discord_core_api::audit_log_entry_data, discord_core_api::auto_moderation_action_execution_event_data, discord_core_api::button_response_data, discord_core_api::create_dmchannel_data, discord_core_api::delete_user_reaction_data, discord_core_api::get_guild_audit_logs_data, discord_core_api::get_guild_ban_data, discord_core_api::get_thread_member_data, discord_core_api::get_user_data, discord_core_api::modal_response_data, discord_core_api::modify_user_voice_state_data, discord_core_api::reaction_data, discord_core_api::remove_guild_ban_data, discord_core_api::remove_guild_member_role_data, discord_core_api::remove_recipient_from_group_dmdata, discord_core_api::remove_thread_member_data, discord_core_api::select_menu_response_data, discord_core_api::thread_member_data, discord_core_api::voice_connect_init_data, discord_core_api::voice_state_data_light
• userLimit : discord_core_api::channel_data, discord_core_api::create_guild_channel_data
• userName : discord_core_api::execute_web_hook_data, discord_core_api::modify_current_user_data, discord_core_api::user_cache_data, discord_core_api::user_data
• users : discord_core_api::allowed_mentions_data, discord_core_api::audit_log_data, discord_core_api::resolved_data
• uses : discord_core_api::invite_data