code: def memory_free(library, session, offset, extended=False):
      
      if extended:
          return library.viMemFreeEx(session, offset)
      else:
          return library.viMemFree(session, offset)
docs: Frees memory previously allocated using the memory_allocation() operation.
  
      Corresponds to viMemFree* function of the VISA library.
  
      :param library: the visa library wrapped by ctypes.
      :param session: Unique logical identifier to a session.
      :param offset: Offset of the memory to free.
      :param extended: Use 64 bits offset independent of the platform.
      :return: return value of the library call.
      :rtype: :class:`pyvisa.constants.StatusCode`