rpc.retval = 0;
            return null;
        }).when(mockDcerpcHandle).sendrecv(any(MsrpcSamrCloseHandle.class));

        // Act
        aliasHandle.close();

        // Assert
        // Verify that sendrecv was called with MsrpcSamrCloseHandle
        verify(mockDcerpcHandle).sendrecv(any(MsrpcSamrCloseHandle.class));
        // Verify that close was called only once on the mockDcerpcHandle for MsrpcSamrCloseHandle

          private boolean called = false;

          @Override
          public void onSuccess(String result) {
            fail("Was not expecting onSuccess() to be called.");
          }

          @Override
          public void onFailure(Throwable t) {
            synchronized (monitor) {
              assertFalse(called);
              assertThat(t).isInstanceOf(CancellationException.class);

    boolean[] called = new boolean[1];
    f.addCallback(
        new FutureCallback<String>() {
          @Override
          public void onSuccess(String result) {
            called[0] = true;
          }

          @Override
          public void onFailure(Throwable t) {}
        },
        directExecutor());
    assertThat(called[0]).isTrue();
  }

 */
@FunctionalInterface
public interface LlmStreamCallback {

    /**
     * Called for each chunk of the streaming response.
     *
     * @param chunk the text chunk from the LLM response
     * @param done true if this is the final chunk
     */
    void onChunk(String chunk, boolean done);

    /**
     * Called when an error occurs during streaming.
     *
     * @param error the error that occurred
     */

    }

    /**
     * Null pointer scenario – calls on a null reference should raise
     * {@link NullPointerException}. This test is defensive; in real code it
     * would likely be handled elsewhere.
     */
    @Test
    @DisplayName("calling getters on null reference throws NPE")
    void testNullReference() {
        AllocInfo nullRef = null;

because he was in livery:  otherwise, judging by his face only,
she would have called him a fish)--and rapped loudly at the door
with his knuckles.  It was opened by another footman in livery,
with a round face, and large eyes like a frog; and both footmen,
Alice noticed, had powdered hair that curled all over their
heads.  She felt very curious to know what it was all about, and

from typing_extensions import ParamSpec

P = ParamSpec("P")


class BackgroundTasks(StarletteBackgroundTasks):
    """
    A collection of background tasks that will be called after a response has been
    sent to the client.

    Read more about it in the
    [FastAPI docs for Background Tasks](https://fastapi.tiangolo.com/tutorial/background-tasks/).

    ## Example

    ```python

        } catch (IllegalArgumentException e) {
            // Expected exception for empty field name
            assertTrue(e.getMessage().contains("field name is null or empty"));
        }

        // Assert deleteByQuery was NOT called due to exception in query building
        assertFalse(deleteByQueryCalled);
    }

    @Test
    public void test_execute_withOutOfMemoryError() {

 * </ol>
 * <p>
 * Implementations of this interface will be discovered through the Java ServiceLoader mechanism
 * and will be called in sequence during model building.
 * <p>
 * Example usage:
 * <pre>
 * public class CustomModelTransformer implements ModelTransformer {

    }

    public void u(U u) {
      fail(
          "Method with parameter <U extends T> where <T extends @Nullable Object> should not be"
              + " called");
    }

    public <A extends @Nullable Object> void a(A a) {
      fail("Method with parameter <A extends @Nullable Object> should not be called");
    }