question: lookup a participant concode_field_sep HashMap<String,TaxiParticipantBA> participants concode_elem_sep HashMap<String,BAParticipantManager> managers concode_elem_sep String txID concode_field_sep void cancel concode_elem_sep BAParticipantManager getManager concode_elem_sep TaxiParticipantBA removeParticipant concode_elem_sep TaxiManager getTaxiManager concode_elem_sep void error concode_elem_sep TaxiView getTaxiView concode_elem_sep void unknown concode_elem_sep String getTxID concode_elem_sep void confirmCompleted concode_elem_sep void recordParticipant concode_elem_sep void complete concode_elem_sep void close concode_elem_sep void compensate concode_elem_sep String status
target: TaxiParticipantBA function ( String arg0 ) { return participants . get ( arg0 ) ; }