Method create

src/ifcparse/IfcFile.h:456–467

template <typename T>
T* IfcParse::impl::in_memory_file_storage::create() {
    IfcUtil::IfcBaseClass* inst = nullptr;
    if constexpr (std::is_same_v<std::decay_t<std::invoke_result_t<typename T::Class>>, IfcParse::entity>) {
        inst = new T(in_memory_attribute_storage(T::Class().attribute_count()));
    } else if constexpr (std::is_same_v<std::decay_t<std::invoke_result_t<typename T::Class>>, IfcParse::type_declaration>) {
        inst = new T(in_memory_attribute_storage(1));
    } else {
        static_assert(dependent_false_v<T>, "Requires and entity or type declaration");
    }
    inst->file_ = file;
    return file->addEntity(inst)->as<T>();
}

template <typename T>
T* IfcParse::impl::rocks_db_file_storage::create() {