String secondLine = "\\s*at " + ThrowablesTest.class.getName() + "\\..*";
    String moreLines = "(?:.*" + System.lineSeparator() + "?)*";
    String expected =
        firstLine + System.lineSeparator() + secondLine + System.lineSeparator() + moreLines;
    assertThat(getStackTraceAsString(e)).matches(expected);
  }

  public void testGetCausalChain() {

                    System.lineSeparator() + "Options:",
                    options,
                    HelpFormatter.DEFAULT_LEFT_PAD,
                    HelpFormatter.DEFAULT_DESC_PAD,
                    System.lineSeparator(),
                    false);
            pw2.flush();
            for (String s : sw.toString().split(System.lineSeparator())) {
                pw.accept(s);
            }

                    + "You have the following options to resolve this:" + System.lineSeparator()
                    + "  1. Preserve the model version by setting 'preserve.model.version=true' to generate a consumer POM with <modelVersion>4.2.0</modelVersion>, which supports mixins"
                    + System.lineSeparator()

    String secondLine = "\\s*at " + ThrowablesTest.class.getName() + "\\..*";
    String moreLines = "(?:.*" + System.lineSeparator() + "?)*";
    String expected =
        firstLine + System.lineSeparator() + secondLine + System.lineSeparator() + moreLines;
    assertThat(getStackTraceAsString(e)).matches(expected);
  }

  public void testGetCausalChain() {

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 */
@Deprecated
public class ModelValidationResult {

    /** */
    private static final String LS = System.lineSeparator();

    /** */
    private List<String> messages;

    public ModelValidationResult() {
        messages = new ArrayList<>();
    }

    public int getMessageCount() {
        return messages.size();

      URL url = Resources.getResource(tempFile.getName());
      String text = Resources.toString(url, UTF_8);
      assertThat(text).isEqualTo("rud a chur ar an méar fhada" + System.lineSeparator());
    } finally {
      Thread.currentThread().setContextClassLoader(oldContextLoader);
    }
  }

  public void testGetResource_contextClassLoaderNull() {

        formatter.printHelp(
                pw,
                width,
                "mvn [args]",
                System.lineSeparator() + "Options:",
                options,
                HelpFormatter.DEFAULT_LEFT_PAD,
                HelpFormatter.DEFAULT_DESC_PAD,
                System.lineSeparator(),
                false);

        pw.flush();
    }

                try (Writer writer = Files.newBufferedWriter(outputFile, StandardCharsets.UTF_8)) {
                    writer.write(result);
                    if (!result.isEmpty()) {
                        writer.write(System.lineSeparator());
                    }
                }
            } else {
                System.out.print(result);
                System.out.flush();
            }
        } catch (IOException e) {

    public static String showVersion() {
        return showVersion(null, null);
    }

    public static String showVersion(String commandLine, String terminal) {
        final String ls = System.lineSeparator();
        Properties properties = getBuildProperties();
        StringBuilder version = new StringBuilder(256);
        version.append(MessageUtils.builder().strong(createMavenVersionString(properties)))

      URL url = Resources.getResource(tempFile.getName());
      String text = Resources.toString(url, UTF_8);
      assertThat(text).isEqualTo("rud a chur ar an méar fhada" + System.lineSeparator());
    } finally {
      Thread.currentThread().setContextClassLoader(oldContextLoader);
    }
  }

  public void testGetResource_contextClassLoaderNull() {