* <ul>
 *   <li>missing metadata</li>
 *   <li>version range violations</li>
 *   <li>version circular dependencies</li>
 *   <li>missing artifacts</li>
 *   <li>network/transfer errors</li>
 *   <li>file system errors: permissions</li>
 * </ul>
 *
 * TODO carlos: all these possible has*Exceptions and get*Exceptions methods make the clients too

import java.io.IOException;

public class Main {
  public static void main(String[] args) throws IOException {
    Call call = OkHttpCaller.callOkHttp(HttpUrl.get("https://square.com/robots.txt"));

    System.out.println(call.execute().body().string());
  }

      assertEquals(Protocol.HTTP_2, response.protocol());

      for (Certificate c: response.handshake().peerCertificates()) {
        X509Certificate x = (X509Certificate) c;
        System.out.println(x.getSubjectDN());
      }
    }
  }

      if (initialBytes == null) {
        return checkNotNull(bytes);
      } else {
        byte[] result = new byte[initialBytes.length + bytes.length];
        System.arraycopy(initialBytes, 0, result, 0, initialBytes.length);
        System.arraycopy(bytes, 0, result, initialBytes.length, bytes.length);
        return result;
      }
    }

    @Override
    public byte[] getSinkContents() throws IOException {

        assertThat(ex.getMessageCode(), is("ECL0001"));
        assertThat(ex.getArgs().length, is(1));
        assertThat(ex.getArgs()[0], is((Object) "hoge"));
        System.out.println(ex.getMessage());
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGetCause() throws Exception {
        final Throwable t = new NullPointerException("test");

    public void testRelativePath() throws Exception {
        final File f = new File("/Program Files/foo.jar");
        URL url = new URL("jar:" + f.toURI().toURL() + "!/foo/bar/");
        url = new URL(url, "..");
        System.out.println(url.toExternalForm());
    }

        final Element root = doc.getDocumentElement();
        final String contents = DomUtil.toString(root);
        System.out.println(contents);
    }

/**
 * To handle runtime informations like local repository or profiles.
 *
 */
@Deprecated
public class RuntimeInfo {
    @SuppressWarnings("checkstyle:constantname")
    public static final String userHome = System.getProperty("user.home");

    @SuppressWarnings("checkstyle:constantname")
    public static final File userMavenConfigurationHome = new File(userHome, ".m2");

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

/**
 * Repository layout.
 *
 * @deprecated Avoid use of this type, if you need access to local repository use repository system session instead.
 */
@Deprecated
public interface ArtifactRepositoryLayout {
    String ROLE = ArtifactRepositoryLayout.class.getName();

    String getId();

    String pathOf(Artifact artifact);

- **Type Safe** - Comprehensive use of generics and modern Java type system features

### Additional Components
- **Text Processing** (`org.codelibs.core.text`) - JSON utilities, tokenization, decimal formatting, and text manipulation
- **Logging Abstraction** (`org.codelibs.core.log`) - Flexible logging system supporting JCL (Jakarta Commons Logging) and JUL (Java Util Logging)