cdm/src/main/java/ucar/nc2/ft2/simpgeometry/CFLine.java
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.