Here is a list of all related symbols with links to the classes they belong to:

• base_registry : co_ecs::chunk, co_ecs::placeholder_entity
• command_entity_ref : co_ecs::command_buffer
• command_writer : co_ecs::command_buffer, co_ecs::command_entity_ref
• component_set_hasher : co_ecs::component_set
• const_entity_ref : co_ecs::base_registry
• entity_ref : co_ecs::base_registry
• thread_pool : co_ecs::thread_pool::worker