if (map == null) {
            final String value = getSystemProperty(Constants.DEFAULT_LABEL_VALUE_PROPERTY);
            if (StringUtil.isBlank(value)) {
                map = Collections.emptyMap();
            } else {
                final Set<String> keySet = new HashSet<>();
                map = split(value, "\n").get(stream -> stream.filter(StringUtil::isNotBlank).map(s -> {

    return CollectCollectors.toImmutableMap(keyFunction, valueFunction, mergeFunction);
  }

  /**
   * Returns the empty map. This map behaves and performs comparably to {@link
   * Collections#emptyMap}, and is preferable mainly for consistency and maintainability of your
   * code.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  @SuppressWarnings("unchecked")

    return CollectCollectors.toImmutableMap(keyFunction, valueFunction, mergeFunction);
  }

  /**
   * Returns the empty map. This map behaves and performs comparably to {@link
   * Collections#emptyMap}, and is preferable mainly for consistency and maintainability of your
   * code.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  @SuppressWarnings("unchecked")

scala.collection.GenMap $plus$79a5e04d(scala.Tuple2); public final void foreach(scala.Function1); public void Map$Map1(Object, Object); } scala/collection/immutable/Map$EmptyMap$.class package scala.collection.immutable; public final synchronized class Map$EmptyMap$ extends AbstractMap implements scala.Serializable { public static final Map$EmptyMap$ MODULE$; public static void <clinit>(); public final int size(); public final scala.Option get(Object); public final scala.collection.Iterator iterator(); public...

pkg regexp/syntax, const DotNL Flags
pkg regexp/syntax, const EmptyBeginLine EmptyOp
pkg regexp/syntax, const EmptyBeginText EmptyOp
pkg regexp/syntax, const EmptyEndLine EmptyOp
pkg regexp/syntax, const EmptyEndText EmptyOp
pkg regexp/syntax, const EmptyNoWordBoundary EmptyOp
pkg regexp/syntax, const EmptyWordBoundary EmptyOp
pkg regexp/syntax, const ErrInternalError ErrorCode