public final void setGroupDeterminer(OutputGroupDeterminer groupDeterminer) {
        this.groupDeterminer = groupDeterminer;
    }
Called to map the event and send it to {@link SinkListener} for publishing

@param event                     {@link Event} that need to be mapped
@param optionHolder              Option holder containing static and dynamic options related to the mapper
@param payloadTemplateBuilderMap To build the message payloads based on the given templates
@param sinkListener              {@link SinkListener} that will be called with the mapped event
modules/siddhi-core/src/main/java/io/siddhi/core/stream/output/sink/SinkMapper.java