// Assert
        assertTrue(result, "Verify should return true for valid signature");
        verify(signingDigest, times(1)).verify(testData, offset, length, extraPad, message);
    }

    @Test
    @DisplayName("Test verify method returns false for invalid signature")
    void testVerifyReturnsFalse() {
        // Arrange
        int offset = 0;
        int length = testData.length;

	if err != nil {
		t.Fatal(err)
	}

      }
      return builder.build();
    }
  }

  private static final class Signature {
    private final String name;
    private final ImmutableList<Class<?>> parameterTypes;

    Signature(Method method) {
      this(method.getName(), ImmutableList.copyOf(method.getParameterTypes()));
    }

    Signature(String name, ImmutableList<Class<?>> parameterTypes) {
      this.name = name;

xlHeaderVersion version == 1:

```
//msgp:tuple xlMetaV2VersionHeader
type xlMetaV2VersionHeader struct {
 VersionID [16]byte  // Version UUID, raw.
 ModTime   int64     // Unix nanoseconds.
 Signature [4]byte   // Signature of metadata.
 Type      uint8     // Type if the version
 Flags     uint8
}
```

The following flags are defined:

```
const (
 FreeVersion = 1 << 0
 UsesDataDir = 1 << 1

                    12:8b
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature
            X509v3 Extended Key Usage: 
                TLS Web Client Authentication
            X509v3 Basic Constraints: critical
                CA:FALSE
    Signature Algorithm: ED25519
         7e:aa:be:ed:47:4d:b9:2f:fc:ed:7f:5a:fc:6b:c0:05:5b:f5:

    }

    /**
     * Returns the string representation of the method signature.
     *
     * @param methodName
     *            The method name. Cannot be {@literal null} or empty
     * @param argTypes
     *            The argument types
     * @return The string representation of the method signature
     */
    public static String getSignature(final String methodName, final Class<?>... argTypes) {

robolectric-android = "org.robolectric:android-all:16-robolectric-13921718"
robolectric = "org.robolectric:robolectric:4.16"
#noinspection UnusedVersionCatalogEntry
signature-android-apilevel21 = "net.sf.androidscents.signature:android-api-level-21:5.0.1_r2"
#noinspection UnusedVersionCatalogEntry
signature-android-apilevel24 = "net.sf.androidscents.signature:android-api-level-24:7.0_r2"

  if (TF_GetCode(status) != TF_OK) return;

  tensorflow::GradientDef gdef;
  gdef.set_function_name(func->record->fdef().signature().name());
  gdef.set_gradient_func(grad->record->fdef().signature().name());
  status->status = g->graph.AddGradientDef(std::move(gdef));
}

int TF_GraphNumFunctions(TF_Graph* g) {
  tensorflow::mutex_lock l(g->mu);

            // Try to call the expired method
            // Note: This method may fail in test environments due to system dependencies
            // but we mainly want to ensure the method signature is correct
            testTarget.expired();

            // If we get here, the method executed successfully
            assertTrue("expired method executed successfully", true);
        } catch (Throwable t) {

    * the server.
    */
    int NTLMSSP_REQUEST_TARGET = 0x00000004;

    /**
    * Specifies that communication across the authenticated channel
    * should carry a digital signature (message integrity).
    */
    int NTLMSSP_NEGOTIATE_SIGN = 0x00000010;

    /**
    * Specifies that communication across the authenticated channel
    * should be encrypted (message confidentiality).
    */