question: converts the timestamp of an event from its `` milliseconds since beginning the epoch '' representation into a unified string representation . concode_field_sep SimpleDateFormat DATA_FORMATTER concode_elem_sep long sequenceNumber concode_elem_sep long serialVersionUID concode_elem_sep AtomicLong GLOBAL_SEQUENCE_NUMBER concode_elem_sep long timestamp concode_field_sep long getSequenceNumber concode_elem_sep void read concode_elem_sep long getTimestamp concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String getTimestampString concode_elem_sep String toString concode_elem_sep void write
target: String function ( long arg0 ) { return DATA_FORMATTER . format ( new Date ( arg0 ) ) ; }