+ Only use spaces for indentation.
  + Create minimal diffs - disable on save actions like reformat source code or organize imports.
    If you feel the source code should be reformatted, create a separate PR for this change.
  + Check for unnecessary whitespace with `git diff --check` before committing.
+ Make sure your commit messages are in the proper format. Your commit message should contain the key of the JIRA issue.
```

    xsi:schemaLocation="http://maven.apache.org/ASSEMBLY/2.1.0 http://maven.apache.org/xsd/assembly-2.1.0.xsd">
  <id>bin</id>
  <formats>
    <format>zip</format>
    <format>tar.gz</format>
  </formats>
  <componentDescriptors>
    <componentDescriptor>src/assembly/component.xml</componentDescriptor>
  </componentDescriptors>

                break;
            default:
                throw new IllegalArgumentException("Bad artifact coordinates " + coord
                        + ", expected format is <groupId>:<artifactId>[:<extension>[:<classifier>]]:<version>");
        }
        return s;
    }

 */
public class MavenBuildTimestamp {
    // ISO 8601-compliant timestamp for machine readability
    public static final String DEFAULT_BUILD_TIMESTAMP_FORMAT = "yyyy-MM-dd'T'HH:mm:ss'Z'";

    public static final String BUILD_TIMESTAMP_FORMAT_PROPERTY = "maven.build.timestamp.format";

    public static final TimeZone DEFAULT_BUILD_TIME_ZONE = TimeZone.getTimeZone("Etc/UTC");

    private String formattedTimestamp;

parseDouble(CharSequence) throws NumberFormatExceptio; public static StringBuffer format(boolean, StringBuffer); public static StringBuffer format(short, StringBuffer); public static StringBuffer format(short, int, StringBuffer); public static StringBuffer format(int, StringBuffer); public static StringBuffer format(int, int, StringBuffer); private static void format2(int, int, StringBuffer); public static StringBuffer format(long, StringBuffer); public static StringBuffer format(long, int, StringBuffer);...

            final Set<Plugin> unsafePlugins = executionPlan.getNonThreadSafePlugins();
            if (!unsafePlugins.isEmpty()) {
                for (String s : MultilineMessageHelper.format(
                        "Your build is requesting parallel execution, but this project contains the following "
                                + "plugin(s) that have goals not marked as thread-safe to support parallel execution.",

/**
 * Collects the output of the project builder.
 *
 */
public interface ProjectBuildingResult {

    /**
     * Gets the identifier of the project that could not be built. The general format of the identifier is {@code
     * <groupId>:<artifactId>:<version>} but some of these coordinates may still be unknown at the point the exception
     * is thrown so this information is merely meant to assist the user.
     *

                .appendText(formatLocation(columnNumber, lineNumber));
    }

    private String formatLocation(int columnNumber, int lineNumber) {
        return String.format("line %d, column %d", lineNumber, columnNumber);
    }

    @Override
    public void describeMismatch(final Object o, final Description description) {
        if (!(o instanceof ProjectBuildingResult)) {

        String timestampFormat = DEFAULT_BUILD_TIMESTAMP_FORMAT;

        Properties modelProperties = model.getProperties();
        if (modelProperties != null) {
            timestampFormat = modelProperties.getProperty(BUILD_TIMESTAMP_FORMAT_PROPERTY, timestampFormat);
        }

                md.update(buffer, 0, read);
            }
        }
        StringBuilder result = new StringBuilder();
        for (byte b : md.digest()) {
            result.append(String.format("%02x", b));
        }
        return result.toString();
    }