import org.apache.maven.api.services.ModelProblemCollector;
import org.apache.maven.api.spi.ModelParserException;

/**
 * Collects problems that are encountered during model building. The primary purpose of this component is to account for
 * the fact that the problem reporter has/should not have information about the calling context and hence cannot provide

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.versioning.OverConstrainedVersionException;

/**
 * Specific problems during resolution that we want to account for:
 * <ul>
 *   <li>missing metadata</li>
 *   <li>version range violations</li>
 *   <li>version circular dependencies</li>
 *   <li>missing artifacts</li>
 *   <li>network/transfer errors</li>

                        }
                    }
                }
            }
        }
    }

    // org.apache.maven.plugins:maven-remote-resources-plugin:1.0:process
    // TODO take repo mans into account as one may be aggregating prefixes of many
    // TODO collect at the root of the repository, read the one at the root, and fetch remote if something is missing
    // or the user forces the issue

        getRemoteFile(repository, destination, remotePath, null, checksumPolicy, true);
    }

    /**
     * Deal with connecting to a wagon repository taking into account authentication and proxies.
     *
     * @param wagon
     * @param repository
     *
     * @throws ConnectionException
     * @throws AuthenticationException
     */

        }

        return pluginManager.getMojoDescriptor(
                plugin, goal, project.getRemotePluginRepositories(), session.getRepositorySession());
    }

    // TODO take repo mans into account as one may be aggregating prefixes of many
    // TODO collect at the root of the repository, read the one at the root, and fetch remote if something is missing
    // or the user forces the issue

import java.util.List;

import org.apache.maven.api.model.InputLocation;

/**
 * Collects problems that are encountered during model building. The primary purpose of this component is to account for
 * the fact that the problem reporter has/should not have information about the calling context and hence cannot provide

                testPlugin = plugin;
            }

            Integer count = validPluginCounts.get(pluginArtifactId);

            assertEquals(0, (int) count, "Multiple copies of plugin: " + pluginArtifactId + " found in POM.");

            count = count + 1;

            validPluginCounts.put(pluginArtifactId, count);
        }

        assertNotNull(testPlugin);

     * @param root the root node of the dependency graph
     * @param count estimated number of dependencies
     */
    DefaultDependencyResolverResult(List<Exception> exceptions, Node root, int count) {
        this.exceptions = exceptions;
        this.root = root;
        nodes = new ArrayList<>(count);
        paths = new ArrayList<>(count);
        dispatchedPaths = new LinkedHashMap<>();

 * <p>
 * This builder uses a number of threads equal to the minimum of the degree of concurrency (which is the thread count
 * set with <code>-T</code> on the command-line) and the number of projects to build. As such, building a single project
 * will always result in a sequential build, regardless of the thread count.
 * </p>
 * <strong>NOTE:</strong> This class is not part of any public api and can be changed or deleted without prior notice.
 *

        requireNonNull(pluginBindings);
        final int len = pluginBindings.length;
        if (len < 2 || len % 2 != 0) {
            throw new IllegalArgumentException("Plugin bindings must have more than 0, even count of elements");
        }

        HashMap<String, LifecyclePhase> lifecyclePhaseBindings = new HashMap<>(len / 2);
        for (int i = 0; i < len; i = i + 2) {