text: #pragma once
  #include "dual.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  RUNTIME_API dual_entity_t dualX_hashset_insert(
      dual_storage_t* storage, const dual_type_set_t* key_set,
      dual_entity_type_t* alloc_type, dual_view_callback_t callback, void* u);
  
  #ifdef __cplusplus
  }
  #endif