* @return The document helper.
     */
    public static DocumentHelper getDocumentHelper() {
        return getComponent(DOCUMENT_HELPER);
    }

    /**
     * Gets the query parser component.
     * @return The query parser.
     */
    public static QueryParser getQueryParser() {
        return getComponent(QUERY_PARSER);
    }

    /**
     * Gets the permission helper component.

      }
    ```
=== ":material-language-java: Java"
    ```java
      public static final MediaType MEDIA_TYPE_MARKDOWN
          = MediaType.parse("text/x-markdown; charset=utf-8");

      private final OkHttpClient client = new OkHttpClient();

      public void run() throws Exception {
        String postBody = ""
            + "Releases\n"

func TestIsValidDBNameChar(t *testing.T) {
	for _, db := range []string{"db", "dbName", "db_name", "db1", "1dbname", "db$name"} {
		if fields := strings.FieldsFunc(db, IsValidDBNameChar); len(fields) != 1 {
			t.Fatalf("failed to parse db name %v", db)
		}
	}
}

func TestCheckTruth(t *testing.T) {
	checkTruthTests := []struct {
		v   string
		out bool
	}{
		{"123", true},
		{"true", true},
		{"", false},
		{"false", false},

		if name == "" || name == "." || name == ".." { // Useless names
			continue
		}

		var typ os.FileMode // regular file
		switch {
		case data.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0:
			// Reparse point is a symlink
			fi, err := os.Stat(pathJoin(dirPath, name))
			if err != nil {
				// It got deleted in the meantime, not found
				// or returns too many symlinks ignore this
				// file/directory.

        super("ECL0050", asArray(cause), cause);
    }

    /**
     * Creates a {@link ParseRuntimeException}.
     *
     * @param s the string that could not be parsed
     */
    public ParseRuntimeException(final String s) {
        super("ECL0051", asArray(s));
    }

  }

  /**
   * Parses a media type from its string representation.
   *
   * @throws IllegalArgumentException if the input is not parsable
   */
  @CanIgnoreReturnValue // TODO(b/219820829): consider removing
  public static MediaType parse(String input) {
    checkNotNull(input);
    Tokenizer tokenizer = new Tokenizer(input);
    try {

	}

	if name := DB.Dialector.Name(); name == "postgres" || name == "mysql" || name == "gaussdb" {
		stmt := gorm.Statement{DB: DB}
		stmt.Parse(&Blog{})
		stmt.Schema.LookUpField("ID").Unique = true
		stmt.Parse(&Tag{})
		stmt.Schema.LookUpField("ID").Unique = true
		// postgers only allow unique constraint matching given keys
	}

        this.node[5] = uuid.node[5];
    }

    /**
     * Construct a UUID from string
     *
     * @param str
     *            the string representation of the UUID to parse
     */
    public UUID(final String str) {
        final char[] arr = str.toCharArray();
        this.time_low = hex_to_bin(arr, 0, 8);
        this.time_mid = S(hex_to_bin(arr, 9, 4));

import org.apache.maven.api.annotations.Nullable;

/**
 * Provides access to the contents of a source independently of the
 * backing store (e.g. file system, database, memory).
 * <p>
 * This is mainly used to parse files into objects such as Maven projects,
 * models, settings, or toolchains. The source implementation handles
 * all the details of accessing the underlying content while providing
 * a uniform API to consumers.
 * <p>

import org.apache.maven.api.annotations.Nonnull;

/**
 * A version or meta-version of an artifact or a dependency.
 * A meta-version is a version suffixed with the {@code SNAPSHOT} keyword.
 * Versions are usually parsed using the {@link org.apache.maven.api.services.VersionParser} service.
 *
 * @since 4.0.0
 * @see org.apache.maven.api.services.VersionParser#parseVersion(String)
 * @see org.apache.maven.api.Session#parseVersion(String)