session,
                    pluginArtifact,
                    "Plugin should declare Maven artifacts in `provided` scope. If the plugin already declares them in `provided` scope, update the maven-plugin-plugin to latest version. Artifacts found with wrong scope: "
                            + mavenArtifacts);
        }
    }

        try (InputStream fis = Files.newInputStream(path)) {
            byte[] buffer = new byte[SHA1_BUFFER_SIZE];
            int read;
            while ((read = fis.read(buffer)) != -1) {
                md.update(buffer, 0, read);
            }
        }
        StringBuilder result = new StringBuilder();
        for (byte b : md.digest()) {
            result.append(String.format("%02x", b));
        }

    }

    private PluginsMetadataGenerator(RepositorySystemSession session, Collection<? extends Metadata> metadatas) {
        this.processedPlugins = new LinkedHashMap<>();
        this.timestamp = (Date) ConfigUtils.getObject(session, new Date(), "maven.startTime");

        /*
         * NOTE: This should be considered a quirk to support interop with Maven's legacy ArtifactDeployer which

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.execution;

import java.io.File;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.stream.Collectors;

        // second try, refetch all (possibly outdated) metadata that wasn't updated in the first attempt

        if (!request.getRepositorySession().isOffline() && !requests.isEmpty()) {
            DefaultRepositorySystemSession session = new DefaultRepositorySystemSession(request.getRepositorySession());
            session.setUpdatePolicy(RepositoryPolicy.UPDATE_POLICY_ALWAYS);

            this.algorithm = algorithm;
        }

        @Override
        public void update(ByteBuffer input) {
            algorithm.update(input);
        }

        @Override
        public String checksum() {
            return algorithm.checksum();
        }
    }

            this.algorithm = algorithm;
        }

        @Override
        public void update(ByteBuffer input) {
            algorithm.update(input);
        }

        @Override
        public String checksum() {
            return algorithm.checksum();
        }
    }

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