# Query Parameter Models { #query-parameter-models }

If you have a group of **query parameters** that are related, you can create a **Pydantic model** to declare them.

This would allow you to **re-use the model** in **multiple places** and also to declare validations and metadata for all the parameters at once. 😎

/// note

This is supported since FastAPI version `0.115.0`. 🤓

///

	case strings.HasSuffix(inputFileName, ".zip"):
		outputFileName = strings.TrimSuffix(inputFileName, ".zip") + ".decrypted.zip"
	case strings.Contains(inputFileName, ".enc."):
		outputFileName = strings.Replace(inputFileName, ".enc.", ".", 1) + ".zip"
	default:
		outputFileName = inputFileName + ".decrypted"
	}

	// Open the input and create the output file
	input, err := os.Open(inputFileName)
	fatalErr(err)

    class ModelWithCustomEncoder(BaseModel):
        dt_field: datetime

        @field_serializer("dt_field")
        def serialize_dt_field(self, dt):
            return dt.replace(microsecond=0, tzinfo=timezone.utc).isoformat()

    class ModelWithCustomEncoderSubclass(ModelWithCustomEncoder):
        pass

    model = ModelWithCustomEncoder(dt_field=datetime(2019, 1, 1, 8))

sub-modules, as described below.

Note that the file `__init__.py` in the TensorFlow source code tree is actually
only a placeholder to enable test cases to run. The TensorFlow build replaces
this file with a file generated from [`api_template.__init__.py`](https://www.github.com/tensorflow/tensorflow/blob/master/tensorflow/api_template.__init__.py)
"""

import org.apache.maven.wagon.authentication.AuthenticationInfo;
import org.apache.maven.wagon.proxy.ProxyInfo;

/**
 * Manages <a href="https://maven.apache.org/wagon">Wagon</a> related operations in Maven.
 *
 */
@Deprecated
public interface WagonManager extends org.apache.maven.repository.legacy.WagonManager {
    /**

      "colour": "#43952A",
      "description": "feature request"
    },
    "invalid_question": {
      "name": "type:invalid question",
      "colour": "#CF2E1F",
      "description": "invalid question (not related to GORM or described in document or not enough information provided)"
    },
    "with_playground": {
      "name": "type:with reproduction steps",
      "colour": "#00ff00",
      "description": "with reproduction steps"

     * Set a new list of remote repositories to use the execution request. This is necessary if you perform
     * transformations on the remote repositories being used. For example if you replace existing repositories with
     * mirrors then it's easier to just replace the whole list with a new list of transformed repositories.
     *
     * @param repositories
     * @return This request, never {@code null}.
     */

		return false
	}

	// Headers to be set of object content is not going to be written to the client.
	writeHeaders := func() {
		// set common headers
		setCommonHeaders(w)

		// set object-related metadata headers
		w.Header().Set(xhttp.LastModified, objInfo.ModTime.UTC().Format(http.TimeFormat))

		if objInfo.ETag != "" {
			w.Header()[xhttp.ETag] = []string{"\"" + objInfo.ETag + "\""}
		}
	}

 */
public interface Builder {
    //
    // Be nice to whittle this down to Session, maybe add task segments to the session. The session really is
    // the place to store reactor related information.
    //
    void build(
            MavenSession session,
            ReactorContext reactorContext,
            ProjectBuildList projectBuilds,
            List<TaskSegment> taskSegments,

and any related settlement negotiations. The Indemnified Contributor may participate
in any such claim at its own expense.

For example, a Contributor might include the Program in a commercial product
offering, Product X. That Contributor is then a Commercial Contributor. If
that Commercial Contributor then makes performance claims, or offers warranties