Objects.requireNonNull(model, "model cannot be null");

        output.getParentFile().mkdirs();

        write(WriterFactory.newXmlWriter(output), options, model);
    }

    @Override
    public void write(Writer output, Map<String, Object> options, Model model) throws IOException {
        Objects.requireNonNull(output, "output cannot be null");
        Objects.requireNonNull(model, "model cannot be null");

 * under the License.
 */
package org.apache.maven.model.building;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Collections;
import java.util.List;

import org.apache.maven.model.Model;

/**
 * Signals one ore more errors during model building. The model builder tries to collect as many problems as possible

 -----

Maven 4 API - Immutable Toolchains Model

 This is strictly the immutable model for Maven toolchains in <<<org.apache.maven.api.toolchain>>> package.

 The following are generated from this model:

   * {{{./apidocs/index.html}Java sources}} with <<<Builder>>> inner classes for immutable instances creation.

 See also corresponding {{{../../compat/maven-toolchain-model/index.html}Maven classical toolchains model documentation}}.

	}

	if DB.Model(&hamster2).Association("OtherToy").Count() != 1 {
		t.Errorf("Hamster's toys count should be 1 after Append")
	}

	// Replace
	DB.Model(&hamster).Association("PreferredToy").Replace(&Toy{
		Name: "bike 3",
	})

	DB.Model(&hamster).Association("OtherToy").Replace(&Toy{
		Name: "treadmill 3",
	})

	hamsterToy = Toy{}

 * under the License.
 */
package org.apache.maven.model.v4;

import javax.xml.stream.XMLStreamException;

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.LinkedHashMap;
import java.util.Map;

import org.apache.maven.api.model.Model;
import org.apache.maven.api.model.Plugin;
import org.apache.maven.api.xml.XmlNode;
import org.junit.jupiter.api.Test;

            Model model = new Model();
            model.setModelVersion("4.0.0");
            model.setGroupId(groupId);
            model.setArtifactId(artifactId);
            model.setVersion(version);
            model.setBuild(new Build());
            project = new MavenProject(model);
        }

        public ProjectBuilder setGroupId(String groupId) {

class FormModelOptionalStr(BaseModel):
    p: Optional[str] = None


@app.post("/model-optional-str", operation_id="model_optional_str")
async def read_model_optional_str(p: Annotated[FormModelOptionalStr, Form()]):
    return {"p": p.p}


@pytest.mark.parametrize(
    "path",
    ["/optional-str", "/model-optional-str"],
)
def test_optional_str_schema(path: str):
    openapi = app.openapi()

class QueryModelOptionalListStr(BaseModel):
    p: Optional[list[str]] = None


@app.get("/model-optional-list-str")
async def read_model_optional_list_str(
    p: Annotated[QueryModelOptionalListStr, Query()],
):
    return {"p": p.p}


@pytest.mark.parametrize(
    "path",
    ["/optional-list-str", "/model-optional-list-str"],
)
def test_optional_list_str_schema(path: str):

    return {"p": p}


class QueryModelRequiredStr(BaseModel):
    p: str


@app.get("/model-required-str")
async def read_model_required_str(p: Annotated[QueryModelRequiredStr, Query()]):
    return {"p": p.p}


@pytest.mark.parametrize(
    "path",
    ["/required-str", "/model-required-str"],
)
def test_required_str_schema(path: str):
    assert app.openapi()["paths"][path]["get"]["parameters"] == [

 * under the License.
 */
package org.apache.maven.model.v4;

import java.io.InputStream;
import java.util.Collections;

import org.apache.maven.api.model.Build;
import org.apache.maven.api.model.Model;
import org.apache.maven.api.model.Plugin;
import org.apache.maven.api.model.PluginExecution;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;