public void setNext(Line next) {
		if(next instanceof CFLine) {
			setNext((CFLine) next);
		}
		
		else this.next = next;
	}
public void setNext(Line next) {
		if(next instanceof CFLine) {
			setNext((CFLine) next);
		}
		
		else this.next = next;
	}
public void setNext ( Line next ) { if ( next instanceof CFLine ) { setNext ( ( CFLine ) next ) ; } else this . next = next ; }
Sets the previous line which makes up the multiline which this line is a part of.
If prev is a CFLine, automatically connect the other line to this line as well.
Sets the previous line which makes up the multiline which this line is a part of . If prev is a CFLine automatically connect the other line to this line as well .