RtlInsertElementGenericTableFullAvl - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTRTL_H

NTSYSAPI
PVOID
NTAPI
RtlInsertElementGenericTableFullAvl(
    _In_ PRTL_AVL_TABLE Table,
    _In_reads_bytes_(BufferSize) PVOID Buffer,
    _In_ CLONG BufferSize,
    _Out_opt_ PBOOLEAN NewElement,
    _In_ PVOID NodeOrParent,
    _In_ TABLE_SEARCH_RESULT SearchResult
    );

#endif

View code on GitHub

This function is documented in Windows Driver Kit.