switch (elements.length) {
      case 0:
        return of();
      case 1:
        @SuppressWarnings("unchecked") // safe because it came from `collection`
        E element = (E) elements[0];
        return of(element);
      default:
        return new RegularImmutableList<E>(ImmutableList.<E>nullCheckedList(elements));
    }
  }

        final Object array = Array.newInstance(toType.getRawType(), collection.size());

        int i = 0;
        for (final Object element : collection) {
            Array.set(array, i++, element);
        }

        return array;
    }

    /**
     * Parses a sequence of XML elements and converts them to the appropriate bean type.
     *

 * The maven super model

 * how parent poms are processed

 * the order in which elements in the POM are overridden

 * minimum element-set for a valid project pom


Maven super model

 Inheritance is recursive in Maven but there is a special model which is the implicit super parent in the lineage
 of models you may specify:

  @Override
  public final int previousIndex() {
    return backingIterator().previousIndex();
  }

  @Override
  public void set(@ParametricNullness T element) {
    throw new UnsupportedOperationException();
  }

  @Override
  public void add(@ParametricNullness T element) {
    throw new UnsupportedOperationException();
  }

  @Override
  public final int previousIndex() {
    return backingIterator().previousIndex();
  }

  @Override
  public void set(@ParametricNullness T element) {
    throw new UnsupportedOperationException();
  }

  @Override
  public void add(@ParametricNullness T element) {
    throw new UnsupportedOperationException();
  }

    }

    @Test
    @DisplayName("Test nextElement() returns transaction on first call")
    void testNextElementFirstCall() {
        Object element = transaction.nextElement();
        assertSame(transaction, element, "First nextElement should return the transaction itself");
    }

    @Test
    @DisplayName("Test nextElement() changes command on second call")

package org.apache.maven.cling.invoker.mvnup.goals;

import java.nio.file.Path;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

import eu.maveniverse.domtrip.Document;
import eu.maveniverse.domtrip.Element;
import eu.maveniverse.domtrip.maven.Coordinates;
import eu.maveniverse.domtrip.maven.MavenPomElements;
import org.apache.maven.api.cli.mvnup.UpgradeOptions;
import org.apache.maven.cling.invoker.mvnup.UpgradeContext;

"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    /**
     * This default mode for combining a DOM node during merge means that where element names match, the process will
     * try to merge the element attributes and values, rather than overriding the recessive element completely with the
     * dominant one. This means that wherever the dominant element doesn't provide the value or a particular attribute,
     * that value or attribute will be set from the recessive DOM node.

        String level = ConfigUtils.getString(session, null, Constants.MAVEN_PLUGIN_VALIDATION);
        if (level == null || level.isEmpty()) {
            return DEFAULT_VALIDATION_LEVEL;
        }
        try {
            return ValidationReportLevel.valueOf(level.toUpperCase(Locale.ENGLISH));
        } catch (IllegalArgumentException e) {