question: public static void initAnalysisCellBasedAccessibilityCSVWriterV2 ( String fileExtension ) { try { log . info ( "Initializing AnalysisCellBasedAccessibilityCSVWriterV2 ..." ) ; accessibilityDataWriter = IOUtils . getBufferedWriter ( InternalConstants . MATSIM_4_OPUS_TEMP + fileExtension + FILE_NAME ) ; accessibilityDataWriter . write ( InternalConstants . ZONE_ID + "," + InternalConstants . X_COORDINATE + "," + InternalConstants . Y_COORDINATE + "," + InternalConstants . NEARESTNODE_ID + "," + InternalConstants . NEARESTNODE_X_COORD + "," + InternalConstants . NEARESTNODE_Y_COORD + "," + InternalConstants . ACCESSIBILITY_BY_FREESPEED + "," + InternalConstants . ACCESSIBILITY_BY_CAR + "," + InternalConstants . ACCESSIBILITY_BY_BIKE + "," + InternalConstants . ACCESSIBILITY_BY_WALK ) ; accessibilityDataWriter . newLine ( ) ; log . info ( "... done!" ) ; } catch ( Exception e ) { e . printStackTrace ( ) ; } }
target:  writes the header of accessibility data csv file