* `Field(primary_key=True)` 会告诉 SQLModel `id` 是 SQL 数据库中的**主键**（你可以在 SQLModel 文档中了解更多关于 SQL 主键的信息）。

    **注意：** 我们为主键字段使用 `int | None`，这样在 Python 代码中我们可以在没有 `id`（`id=None`）的情况下创建对象，并假定数据库在保存时会生成它。SQLModel 会理解数据库会提供 `id`，并在数据库模式中将该列定义为非空的 `INTEGER`。详见 [SQLModel 关于主键的文档](https://sqlmodel.tiangolo.com/tutorial/create-db-and-table/#primary-key-id)。

		t.Fatal(err)
	}

	// Check if the reference format and input formats are same.
	if err = formatErasureV3Check(quorumFormat, formats[0]); err != nil {
		t.Fatal(err)
	}

	// QuorumFormat has .This field empty on purpose, expect a failure.
	if err = formatErasureV3Check(formats[0], quorumFormat); err == nil {
		t.Fatal("Unexpected success")
	}

	formats[0] = nil
	quorumFormat, err = getFormatErasureInQuorum(formats)

            Assertions.assertEquals(3, results[i].length, "Thread " + i + " got wrong array length");
        }
    }

    /**
     * Test that volatile fields ensure visibility across threads.
     * Verify that changes to lastLoadedTime are visible to all threads.
     */
    @Test
    public void test_volatileFields_visibility() throws Exception {

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                }
                /*
                 * Also look up an earlier node so that, if the graph is using MapRetrievalCache,
                 * we read one of the fields declared in that class.
                 */
                Set<Integer> unused = graph.successors(first);
                return null; // so the lambda is a Callable to propagate checked await() exceptions
              }));

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        // maxParameterCount should be 0
        // maxDataCount should be 800
        // maxSetupCount should be 0
        assertNotNull(trans2QueryFSInfo);

        // Since these are protected fields, we can't access them directly
        // But we can verify the object is created successfully with these values
    }

    @Test
    @DisplayName("Test information level mapping edge cases")