public static WriteConcernResult unacknowledged() {
        return new WriteConcernResult() {
            @Override
            public boolean wasAcknowledged() {
                return false;
            }

            @Override
            public int getCount() {
                throw getUnacknowledgedWriteException();
            }

            @Override
            public boolean isUpdateOfExisting() {
                throw getUnacknowledgedWriteException();
            }

            @Override
            public BsonValue getUpsertedId() {
                throw getUnacknowledgedWriteException();
            }

            @Override
            public boolean equals(final Object o) {
                if (this == o) {
                    return true;
                }
                if (o == null || getClass() != o.getClass()) {
                    return false;
                }

                WriteConcernResult that = (WriteConcernResult) o;
                return !that.wasAcknowledged();
            }

            @Override
            public int hashCode() {
                return 1;
            }

            @Override
            public String toString() {
                return "UnacknowledgedWriteResult{}";
            }

            private UnsupportedOperationException getUnacknowledgedWriteException() {
                return new UnsupportedOperationException("Cannot get information about an unacknowledged write");
            }
        };
    }
public static WriteConcernResult unacknowledged() {
        return new WriteConcernResult() {
            @Override
            public boolean wasAcknowledged() {
                return false;
            }

            @Override
            public int getCount() {
                throw getUnacknowledgedWriteException();
            }

            @Override
            public boolean isUpdateOfExisting() {
                throw getUnacknowledgedWriteException();
            }

            @Override
            public BsonValue getUpsertedId() {
                throw getUnacknowledgedWriteException();
            }

            @Override
            public boolean equals(final Object o) {
                if (this == o) {
                    return true;
                }
                if (o == null || getClass() != o.getClass()) {
                    return false;
                }

                WriteConcernResult that = (WriteConcernResult) o;
                return !that.wasAcknowledged();
            }

            @Override
            public int hashCode() {
                return 1;
            }

            @Override
            public String toString() {
                return "UnacknowledgedWriteResult{}";
            }

            private UnsupportedOperationException getUnacknowledgedWriteException() {
                return new UnsupportedOperationException("Cannot get information about an unacknowledged write");
            }
        };
    }
public static WriteConcernResult unacknowledged ( ) { return new WriteConcernResult ( ) { @ Override public boolean wasAcknowledged ( ) { return false ; } @ Override public int getCount ( ) { throw getUnacknowledgedWriteException ( ) ; } @ Override public boolean isUpdateOfExisting ( ) { throw getUnacknowledgedWriteException ( ) ; } @ Override public BsonValue getUpsertedId ( ) { throw getUnacknowledgedWriteException ( ) ; } @ Override public boolean equals ( final Object o ) { if ( this == o ) { return true ; } if ( o == null || getClass ( ) != o . getClass ( ) ) { return false ; } WriteConcernResult that = ( WriteConcernResult ) o ; return ! that . wasAcknowledged ( ) ; } @ Override public int hashCode ( ) { return 1 ; } @ Override public String toString ( ) { return "UnacknowledgedWriteResult{}" ; } private UnsupportedOperationException getUnacknowledgedWriteException ( ) { return new UnsupportedOperationException ( "Cannot get information about an unacknowledged write" ) ; } } ; }
Create an unacknowledged WriteConcernResult

@return an unacknowledged WriteConcernResult
Create an unacknowledged WriteConcernResult