address copilot feedback

Author: tianleiwu

include/onnxruntime/core/graph/graph.h

@@ -1469,6 +1469,16 @@ class Graph {  // NOLINT(clang-analyzer-optin.performance.Padding): preserve exi
   /// <returns></returns>
   Status ConvertInitializersIntoOrtValues(gsl::span<const std::filesystem::path> whitelisted_external_paths);
 
+  /// <summary>
+  /// This function converts all the graph TensorProto initializers into OrtValues
+  /// and creates a in-memory external data reference for each OrtValue.
+  /// External data paths are restricted to the model directory.
+  /// </summary>
+  /// <returns></returns>
+  Status ConvertInitializersIntoOrtValues() {
+    return ConvertInitializersIntoOrtValues(gsl::span<const std::filesystem::path>());
+  }
+
   /**
    * @brief This function examines the specified initializers in the graph and converts them inline
    *        if any has external data in memory.

include/onnxruntime/core/session/onnxruntime_c_api.h

@@ -7229,7 +7229,7 @@ struct OrtApi {
    *
    * \param[in] options Session options instance.
    * \param[in] whitelisted_data_folders Semicolon-separated list of absolute directory paths, or
-   *            nullptr/empty string to clear the whitelist.
+   *            an empty string to clear the whitelist. This pointer must not be NULL.
    *
    * \return nullptr on success, or an OrtStatus on failure.
    *