{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[12] *}

In this case, this `__call__` is what **FastAPI** will use to check for additional parameters and sub-dependencies, and this is what will be called to pass a value to the parameter in your *path operation function* later.

## Parameterize the instance

And now, we can use `__init__` to declare the parameters of the instance that we can use to "parameterize" the dependency:

    with pytest.raises(ResponseValidationError) as err:
        client.get("/model/modelX")
    assert err.value.errors() == [
        IsDict(
            {
                "type": "value_error",
                "loc": ("response", "name"),
                "msg": "Value error, name must end in A",
                "input": "modelX",
                "ctx": {"error": HasRepr("ValueError('name must end in A')")},

name: Feature Addition Request
description: I want to add a new feature
labels: ["type=addition"]
body:
  - type: markdown
    attributes:
      value: >
        Filing feature requests is one of the most popular ways to contribute to Guava.


        Be aware, though: most feature requests are not accepted, even if they're suggested by
        a full-time Guava team member. [Feedback](https://stackoverflow.com/a/4543114) from our

        </ul>
    </div>
    <div id="content"></div>
    <div id="form">
        <form method="post" action="form.html">
            <input type="text" name="query" value="aaa">
            <input type="hidden" name="secret" value="xxx">
            <input type="submit" name="Submit">
        </form>
    </div>
	<a href="#" onclick="addFooter('XXX')">Footer</a>
	<div id="footer">
	</div>
</body>

    //                                                                        ============
    protected String convertEmptyToNull(String value) {
        return (value != null && value.length() == 0) ? null : value;
    }

    // ===================================================================================

    return longBitsToDouble(bits);
  }

  /** Returns its argument if it is non-negative, zero if it is negative. */
  static double ensureNonNegative(double value) {
    checkArgument(!isNaN(value));
    return max(value, 0.0);
  }

  @VisibleForTesting static final long ONE_BITS = 0x3ff0000000000000L;

    @Override
    public HashCode hash() {
      long value = checksum.getValue();
      if (bits == 32) {
        /*
         * The long returned from a 32-bit Checksum will have all 0s for its second word, so the
         * cast won't lose any information and is necessary to return a HashCode of the correct
         * size.
         */
        return HashCode.fromInt((int) value);
      } else {
        return HashCode.fromLong(value);

)

// DefaultKVS - default KV config for subnet settings
var DefaultKVS = config.KVS{
	config.KV{
		Key:   config.License, // Deprecated Dec 2021
		Value: "",
	},
	config.KV{
		Key:   config.APIKey,
		Value: "",
	},
	config.KV{
		Key:   config.Proxy,
		Value: "",
	},
}

// Config represents the subnet related configuration
type Config struct {
	// The subnet license token - Deprecated Dec 2021

        }
    ) | IsDict(
        # TODO: remove when deprecating Pydantic v1
        {
            "detail": [
                {
                    "loc": ["query", "query"],
                    "msg": "value is not a valid integer",
                    "type": "type_error.integer",
                }
            ]
        }
    )


def test_query_int_query_baz():

        for (final String key : info.getMetadataKeys()) {
            final String value = info.getCustomMetadataValue(key);
            addMetadata(extractData, key, value);
        }
    }

    protected void addMetadata(final ExtractData extractData, final String name, final String value) {
        if (value != null) {
            extractData.putValue(name, value);
        }
    }

    public long getTimeout() {