this.fieldSeparator = fieldSeparator;
    }

    /**
     * Sets the line separator for text output.
     *
     * @param lineSeparator the line separator
     */
    public void setLineSeparator(final String lineSeparator) {
        this.lineSeparator = lineSeparator;
    }

    /**
     * Sets the separator for header-value association in text output.
     *

            }
        }

        for (Exception exception : result.getCollectionErrors()) {
            msg.append(exception.getMessage()).append(System.lineSeparator());
            if (exception.getCause() != null) {
                msg.append("\tCaused by: ")
                        .append(exception.getCause().getMessage())
                        .append(System.lineSeparator());
            }

  public void writeLines(Stream<? extends CharSequence> lines, String lineSeparator)
      throws IOException {
    writeLines(lines.iterator(), lineSeparator);
  }

  private void writeLines(Iterator<? extends CharSequence> lines, String lineSeparator)
      throws IOException {
    checkNotNull(lineSeparator);

    try (Writer out = openBufferedStream()) {
      while (lines.hasNext()) {

        this.fieldSeparator = fieldSeparator;
    }

    /**
     * Sets the line separator between fields.
     *
     * @param lineSeparator the line separator
     */
    public void setLineSeparator(final String lineSeparator) {
        this.lineSeparator = lineSeparator;
    }

    /**
     * Sets whether to extract top-level fields as metadata.
     *
     * @param extractMetadata true to extract metadata

                "Plugin " + plugin.getId() + " or one of its dependencies could not be resolved:"
                        + System.lineSeparator() + "\t"
                        + exceptions.stream()
                                .map(Throwable::getMessage)
                                .collect(Collectors.joining(System.lineSeparator() + "\t")),
                cause);
        this.plugin = plugin;
    }

    public Plugin getPlugin() {

        super(
                message
                        + (lineNumber > 0 ? System.lineSeparator() + "  Line:   " + lineNumber : "")
                        + (columnNumber > 0 ? System.lineSeparator() + "  Column: " + columnNumber : ""),
                cause);
        this.lineNumber = lineNumber;
        this.columnNumber = columnNumber;
    }

        StringWriter sWriter = new StringWriter();
        PrintWriter pWriter = new PrintWriter(sWriter);

        error.printStackTrace(pWriter);

        System.err.println("[error] " + content + System.lineSeparator() + System.lineSeparator() + sWriter);
    }

    /**
     * @see org.apache.maven.plugin.logging.Log#error(java.lang.Throwable)
     */
    @Override
    public void error(Throwable error) {

        super("Goal: " + goal + " already exists in the plugin descriptor for prefix: " + goalPrefix
                + System.lineSeparator() + "Existing implementation is: " + existingImplementation
                + System.lineSeparator() + "Conflicting implementation is: " + newImplementation);
    }

                    + "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()

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

class ToolchainsBuildingExceptionTest {
    private static final String LS = System.lineSeparator();

    @Test
    void testNoProblems() {
        ToolchainsBuildingException e = new ToolchainsBuildingException(Collections.emptyList());