question: send envelope once at time concode_field_sep EnvelopeCollection.EnvelopeComparator comparator concode_elem_sep EnvelopeCollection envelopes concode_field_sep EnvelopeCollection getEnvelopes concode_elem_sep void schedule concode_elem_sep boolean isEqualEnvelope concode_elem_sep boolean equals concode_elem_sep void clear concode_elem_sep Envelope[] allEnvelopes concode_elem_sep void unschedule
target: void function ( Envelope arg0 , long arg1 ) { if ( arg0 . getMailbox ( ) != this ) { throw new RuntimeException ( "srini_string" ) ; } envelopes . putEnvelopeOnce ( arg0 , arg1 , comparator ) ; }