Method Required

Libs/flatbuffers/flatbuffers.h:2810–2816

template<typename T>
void FlatBufferBuilder::Required(Offset<T> table, voffset_t field) {
  auto table_ptr = reinterpret_cast<const Table *>(buf_.data_at(table.o));
  bool ok = table_ptr->GetOptionalFieldOffset(field) != 0;
  // If this fails, the caller will show what field needs to be set.
  FLATBUFFERS_ASSERT(ok);
  (void)ok;
}

/// @brief This can compute the start of a FlatBuffer from a root pointer, i.e.
/// it is the opposite transformation of GetRoot().