Shinsuke Sugaya <******@****.***> 1514783567 +0900

  // The device of var_handle1 is remote device, which was replaced during
  // cluster update. Removing resource with invalid device should fail
  // gracefully (i.e., with error status) instead of crashing with segfaults.
  op = TFE_NewOp(ctx, "DestroyResourceOp", status);
  ASSERT_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);
  TFE_OpAddInput(op, var_handle1, status);
  TFE_OpSetDevice(op, dev1_name, status);

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list_quorum                     (string)    set the acceptable quorum expected for list operations e.g. "optimal", "reduced", "disk", "strict", "auto" (default: 'strict')
replication_priority            (string)    set replication priority (default: 'auto')
replication_max_workers         (number)    set the maximum number of replication workers (default: '500')

     * 
     * @return default netbios scope to set in requests
     */
    String getNetbiosScope ();


    /**
     * 
     * Property <tt>jcifs.netbios.snd_buf_size</tt> (int, default 576)
     * 
     * @return netbios send buffer size
     */
    int getNetbiosSndBufSize ();


    /**
     * 
     * Property <tt>jcifs.netbios.rcv_buf_size</tt> (int, default 576)
     * 

As in this case (without using `Annotated`) we have to replace the default value `None` in the function with `Query()`, we now need to set the default value with the parameter `Query(default=None)`, it serves the same purpose of defining that default value (at least for FastAPI).

So:

```Python
q: Union[str, None] = Query(default=None)
```

...makes the parameter optional, with a default value of `None`, the same as:

```Python

			passwordEnv = passwordEnv + config.Default + k
		}
		userEnv := target.EnvRedisUser
		if k != config.Default {
			userEnv = userEnv + config.Default + k
		}
		keyEnv := target.EnvRedisKey
		if k != config.Default {
			keyEnv = keyEnv + config.Default + k
		}
		queueDirEnv := target.EnvRedisQueueDir
		if k != config.Default {
			queueDirEnv = queueDirEnv + config.Default + k
		}

    graph = ValueGraphBuilder.directed().build();

    assertThat(graph.edgeValueOrDefault(1, 2, DEFAULT)).isEqualTo(DEFAULT);
    assertThat(graph.edgeValueOrDefault(2, 1, DEFAULT)).isEqualTo(DEFAULT);
    assertThat(graph.edgeValue(1, 2).orElse(DEFAULT)).isEqualTo(DEFAULT);
    assertThat(graph.edgeValue(2, 1).orElse(DEFAULT)).isEqualTo(DEFAULT);
    assertThat(graph.edgeValueOrDefault(1, 2, null)).isNull();

        include_in_schema: bool = True,
        json_schema_extra: Union[Dict[str, Any], None] = None,
        **extra: Any,
    ):
        assert default is ..., "Path parameters cannot have a default value"
        self.in_ = self.in_
        super().__init__(
            default=default,
            default_factory=default_factory,
            annotation=annotation,
            alias=alias,
            alias_priority=alias_priority,

    assertThat(graph.edgeValueOrDefault(4, 4, null)).isEqualTo("valueD");
    assertThat(graph.edgeValueOrDefault(1, 2, DEFAULT)).isEqualTo("valueA");
    assertThat(graph.edgeValueOrDefault(2, 1, DEFAULT)).isEqualTo("valueB");
    assertThat(graph.edgeValueOrDefault(2, 3, DEFAULT)).isEqualTo("valueC");
    assertThat(graph.edgeValueOrDefault(4, 4, DEFAULT)).isEqualTo("valueD");

    String toString = graph.toString();
    assertThat(toString).contains("valueA");