question: public static StackTraceElement [ ] approxSourceStackTraceElement ( FrameState frameState ) { ArrayList < StackTraceElement > elements = new ArrayList < > ( ) ; FrameState state = frameState ; while ( state != null ) { Bytecode code = state . getCode ( ) ; if ( code != null ) { elements . add ( code . asStackTraceElement ( state . bci - 1 ) ) ; } state = state . outerFrameState ( ) ; } return elements . toArray ( new StackTraceElement [ 0 ] ) ; }
target:  Gets an approximate source code location for frame state.