*                 v   v
   */
  // Define
  TF_Operation* feed1 = Placeholder(func_graph_, s_, "feed1");
  TF_Operation* feed2 = Placeholder(func_graph_, s_, "feed2");
  Define(-1, {}, {feed1, feed2}, {feed2, feed1}, {});

  // Use, run, and verify
  TF_Operation* two = ScalarConst(2, host_graph_, s_);
  TF_Operation* func_feed = Placeholder(host_graph_, s_);
  TF_Operation* func_op = Use({two, func_feed});

  TF_Status* s = TF_NewStatus();
  TF_Graph* graph = TF_NewGraph();

  // Make a placeholder operation.
  TF_Operation* feed = Placeholder(graph, s);
  ASSERT_EQ(TF_OK, TF_GetCode(s)) << TF_Message(s);

  // Test TF_Operation*() query functions.
  EXPECT_EQ(std::string("feed"), std::string(TF_OperationName(feed)));
  EXPECT_EQ(std::string("Placeholder"), std::string(TF_OperationOpType(feed)));

              --input $(location :tensorflow_def_file) \\
              --output $@
          """,
        "//conditions:default": "touch $@",  # Just a placeholder for Unix platforms
    }),
    tools = ["@local_config_def_file_filter//:def_file_filter"],
    visibility = ["//visibility:public"],
)

   *     message is formed by replacing each {@code %s} placeholder in the template with an
   *     argument. These are matched by position - the first {@code %s} gets {@code
   *     errorMessageArgs[0]}, etc. Unmatched arguments will be appended to the formatted message in
   *     square braces. Unmatched placeholders will be left as-is.

   *     message is formed by replacing each {@code %s} placeholder in the template with an
   *     argument. These are matched by position - the first {@code %s} gets {@code
   *     errorMessageArgs[0]}, etc. Unmatched arguments will be appended to the formatted message in
   *     square braces. Unmatched placeholders will be left as-is.

            return StringUtil.EMPTY;
        }
        return "IMPORTANT: You MUST respond in " + locale.getDisplayLanguage(Locale.ENGLISH) + ".";
    }

    /**
     * Resolves the {{languageInstruction}} placeholder in a prompt.
     *
     * @param prompt the prompt template
     * @return the prompt with language instruction resolved
     */
    protected String resolveLanguageInstruction(final String prompt) {

TF_CAPI_EXPORT extern void TF_SetAttrPlaceholder(TF_OperationDescription* desc,
                                                 const char* attr_name,
                                                 const char* placeholder);

// Set a 'func' attribute to the specified name.
// `value` must point to a string of length `length` bytes.
TF_CAPI_EXPORT extern void TF_SetAttrFuncName(TF_OperationDescription* desc,

        assertTrue(systemPrompt.contains("user message here"));
        assertTrue(systemPrompt.contains("failed query here"));
        assertTrue(systemPrompt.contains("no_results"));
        // Verify placeholders are replaced
        assertFalse(systemPrompt.contains("{{userMessage}}"));
        assertFalse(systemPrompt.contains("{{failedQuery}}"));
        assertFalse(systemPrompt.contains("{{failureReason}}"));
    }