question: MarkerSegment findMarkerSegment ( int tag ) { Iterator iter = markerSequence . iterator ( ) ; while ( iter . hasNext ( ) ) { MarkerSegment seg = ( MarkerSegment ) iter . next ( ) ; if ( seg . tag == tag ) { return seg ; } } return null ; }
target:  Returns the first MarkerSegment object in the list with the given tag, or null if none is found.