// The panic built-in function stops normal execution of the current
// goroutine. When a function F calls panic, normal execution of F stops
// immediately. Any functions whose execution was deferred by F are run in
// the usual way, and then F returns to its caller. To the caller G, the
// invocation of F then behaves like a call to panic, terminating G's
// execution and running any deferred functions. This continues until all

    /**
     * Returns the input stream to be used for the Maven execution.
     * If not set, {@link System#in} will be used by default.
     *
     * @return the input stream, or null if not set
     */
    @Nullable
    InputStream stdIn();

    /**
     * Returns the output stream to be used for the Maven execution.
     * If not set, {@link System#out} will be used by default.
     *

          <description>If specified, identifies a within phase prioritization of executions.</description>
        </field>
        <field>
          <name>executions</name>
          <version>1.0.0+</version>
          <description>The goals to execute within the phase.</description>
          <association>
            <type>Execution</type>
            <multiplicity>*</multiplicity>
          </association>

    }

    @Test
    void testDuplicatePluginExecution() throws Exception {
        SimpleProblemCollector result = validateRaw("duplicate-plugin-execution.xml");

        assertViolations(result, 0, 4, 0);

        assertContains(result.getErrors().get(0), "duplicate execution with id a");
        assertContains(result.getErrors().get(1), "duplicate execution with id default");

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.plugin;

import org.apache.maven.execution.MavenSession;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.eclipse.aether.RepositorySystemSession;
import org.eclipse.aether.artifact.Artifact;

/**

            return result;
        } catch (Exception e) {
            onFailure();
            throw e;
        }
    }

    /**
     * Execute a runnable through the circuit breaker
     *
     * @param runnable the runnable to execute
     * @throws Exception if execution fails or circuit is open
     */
    public void run(Runnable runnable) throws Exception {
        call(() -> {

import org.apache.maven.api.services.VersionParser;
import org.apache.maven.api.services.VersionRangeResolver;
import org.apache.maven.execution.DefaultMavenExecutionResult;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.extension.internal.CoreExports;
import org.apache.maven.extension.internal.CoreExtensionEntry;

import org.apache.maven.configuration.internal.EnhancedComponentConfigurator;
import org.apache.maven.execution.DefaultMavenExecutionRequest;
import org.apache.maven.execution.DefaultMavenExecutionResult;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.impl.model.reflection.IntrospectionException;
import org.apache.maven.model.Build;

    void projectFinished(String projectId);

    void executionFailure(String projectId, boolean halted, String exception);

    void mojoStarted(ExecutionEvent event);

    void finish(int exitCode) throws Exception;

    void fail(Throwable t) throws Exception;

    void log(String msg);

    void transfer(String projectId, TransferEvent e);

import java.util.function.ToLongFunction;

import org.apache.maven.execution.ProjectDependencyGraph;
import org.apache.maven.project.MavenProject;

/**
 * Smart project comparator that orders projects based on critical path analysis.
 * Projects with longer downstream dependency chains are prioritized to maximize
 * parallel execution efficiency.
 *
 * <p>The algorithm calculates a weight for each project as: