return map == null ? EMPTY_CONTEXT_DATA : map;
    }

    @Override
    public Map<String, String> getImmutableMapOrNull() {
        final StringMap map = localMap.get();
        return map == null ? null : Collections.unmodifiableMap(map.toMap());
    }

    @Override
    public boolean isEmpty() {
        final StringMap map = localMap.get();
        return map == null || map.size() == 0;
    }

    @Override
    public String toString() {
        final StringMap map = localMap.get();
        return map == null ? "{}" : map.toString();
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        final StringMap map = this.localMap.get();
        result = prime * result + ((map == null) ? 0 : map.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (!(obj instanceof ThreadContextMap)) {
            return false;
        }
        final ThreadContextMap other = (ThreadContextMap) obj;
        final Map<String, String> map = this.getImmutableMapOrNull();
        final Map<String, String> otherMap = other.getImmutableMapOrNull();
        if (map == null) {
            if (otherMap != null) {
                return false;
            }
        } else if (!map.equals(otherMap)) {
            return false;
        }
        return true;
    }
}

            }
            final Marker[] localParents = parents;
            if (localParents != null) {
                // With only one or two parents the for loop is slower.
                final int localParentsLength = localParents.length;
                if (localParentsLength == 1) {
                    return checkParent(localParents[0], marker);
                }
                if (localParentsLength == 2) {
                    return checkParent(localParents[0], marker) || checkParent(localParents[1], marker);
                }
                // noinspection ForLoopReplaceableByForEach
                for (int i = 0; i < localParentsLength; i++) {
                    final Marker localParent = localParents[i];
                    if (checkParent(localParent, marker)) {
                        return true;
                    }
                }
            }
            return false;
        }

        @Override

            if (localParents != null) {
                final int localParentsLength = localParents.length;
                if (localParentsLength == 1) {
                    return checkParent(localParents[0], marker);
                }
                if (localParentsLength == 2) {
                    return checkParent(localParents[0], marker) || checkParent(localParents[1], marker);
                }
                // noinspection ForLoopReplaceableByForEach
                for (int i = 0; i < localParentsLength; i++) {
                    final Marker localParent = localParents[i];
                    if (checkParent(localParent, marker)) {
                        return true;
                    }
                }
            }

            return false;
        }

        @PerformanceSensitive({"allocation", "unrolled"})

    }

    @Override
    public String toString() {
        return getFormattedMessage();
    }

    private void writeObject(final ObjectOutputStream out) throws IOException {
        out.defaultWriteObject();
        getFormattedMessage();
        out.writeUTF(formattedMessage);
        out.writeUTF(messagePattern);
        out.writeInt(argArray.length);
        stringArgs = new String[argArray.length];
        int i = 0;
        for (final Object obj : argArray) {
            final String string = String.valueOf(obj);
            stringArgs[i] = string;
            out.writeUTF(string);
            ++i;
        }
    }

            if (localParents != null) {
                // With only one or two parents the for loop is slower.
                final int localParentsLength = localParents.length;
                if (localParentsLength == 1) {
                    return checkParent(localParents[0], marker);
                }
                if (localParentsLength == 2) {
                    return checkParent(localParents[0], marker) || checkParent(localParents[1], marker);
                }
                // noinspection ForLoopReplaceableByForEach
                for (int i = 0; i < localParentsLength; i++) {
                    final Marker localParent = localParents[i];
                    if (checkParent(localParent, marker)) {
                        return true;
                    }
                }
            }
            return false;
        }

        @Override