question: returns the time difference between the first and last events in this log . concode_field_sep String TAG concode_elem_sep boolean ENABLED concode_elem_sep boolean mFinished concode_elem_sep String name concode_elem_sep boolean DEBUG concode_elem_sep List<Marker> mMarkers concode_elem_sep long thread concode_elem_sep long time concode_elem_sep long MIN_DURATION_FOR_LOGGING_MS concode_field_sep void add concode_elem_sep void d concode_elem_sep void e concode_elem_sep void e concode_elem_sep void v concode_elem_sep String buildMessage concode_elem_sep void wtf concode_elem_sep void wtf concode_elem_sep void setTag concode_elem_sep void finish concode_elem_sep void finalize
target: long function ( ) { if ( mMarkers . size ( ) == 0 ) { return 0 ; } long loc0 = mMarkers . get ( 0 ) . time ; long loc1 = mMarkers . get ( mMarkers . size ( ) - 1 ) . time ; return loc1 - loc0 ; }