question: get the name of the column containing the event payload type . concode_field_sep String eventIdentifierColumn concode_elem_sep String payloadColumn concode_elem_sep String payloadRevisionColumn concode_elem_sep String payloadColumn concode_elem_sep String metaDataColumn concode_elem_sep String typeColumn concode_elem_sep String snapshotTable concode_elem_sep String aggregateIdentifierColumn concode_elem_sep String snapshotTable concode_elem_sep String globalIndexColumn concode_elem_sep String timestampColumn concode_elem_sep String typeColumn concode_elem_sep String domainEventTable concode_elem_sep String eventIdentifierColumn concode_elem_sep String globalIndexColumn concode_elem_sep String metaDataColumn concode_elem_sep String sequenceNumberColumn concode_elem_sep String aggregateIdentifierColumn concode_elem_sep String payloadTypeColumn concode_elem_sep String payloadTypeColumn concode_elem_sep String payloadRevisionColumn concode_elem_sep String domainEventTable concode_elem_sep String sequenceNumberColumn concode_elem_sep String timestampColumn concode_field_sep String payloadColumn concode_elem_sep String globalIndexColumn concode_elem_sep Builder withPayloadTypeColumn concode_elem_sep String domainEventTable concode_elem_sep String eventIdentifierColumn concode_elem_sep Builder builder concode_elem_sep String metaDataColumn concode_elem_sep Builder withGlobalIndexColumn concode_elem_sep String payloadRevisionColumn concode_elem_sep Builder withEventTable concode_elem_sep Builder withEventIdentifierColumn concode_elem_sep Builder withSequenceNumberColumn concode_elem_sep Builder withPayloadColumn concode_elem_sep String typeColumn concode_elem_sep String aggregateIdentifierColumn concode_elem_sep String snapshotTable concode_elem_sep Builder withTimestampColumn concode_elem_sep Builder withSnapshotTable concode_elem_sep Builder withAggregateIdentifierColumn concode_elem_sep Builder withMetaDataColumn concode_elem_sep EventSchema build concode_elem_sep Builder withTypeColumn concode_elem_sep String sequenceNumberColumn concode_elem_sep Builder withPayloadRevisionColumn concode_elem_sep String timestampColumn
target: String function ( ) { return payloadTypeColumn ; }