#ifndef _NTIOAPI_H
typedef struct _FILE_PROCESS_IDS_USING_FILE_INFORMATION
{
    ULONG NumberOfProcessIdsInList;
    _Field_size_(NumberOfProcessIdsInList) ULONG_PTR ProcessIdList[1];
} FILE_PROCESS_IDS_USING_FILE_INFORMATION, *PFILE_PROCESS_IDS_USING_FILE_INFORMATION;
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