From 4f7f6dc301f5ffb9765b055d48324dc7629abd5a Mon Sep 17 00:00:00 2001
From: engedy <engedy@google.com>
Date: Wed, 1 Dec 2021 08:06:19 +0100
Subject: [PATCH] Restore FlatBufferBuilder::kFileIdentifierLength. (#6960)

Restore flatbuffers::FlatBufferBuilder::kFileIdentifierLength, which was a documented part of the public API, but the identifier was lost during the refactoring effected by comment commit 6c8c291559053f90a35c138499053449a40e3b9a.
---
 include/flatbuffers/flatbuffer_builder.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/flatbuffers/flatbuffer_builder.h b/include/flatbuffers/flatbuffer_builder.h
index ce40f7b09..8be4efbe9 100644
--- a/include/flatbuffers/flatbuffer_builder.h
+++ b/include/flatbuffers/flatbuffer_builder.h
@@ -1074,6 +1074,10 @@ class FlatBufferBuilder {
   void SwapBufAllocator(FlatBufferBuilder &other) {
     buf_.swap_allocator(other.buf_);
   }
+  
+  /// @brief The length of a FlatBuffer file header.
+  static const size_t kFileIdentifierLength =
+      ::flatbuffers::kFileIdentifierLength;
 
  protected:
   // You shouldn't really be copying instances of this class.