public void setOffset(int newOffset) {
		offset = newOffset;
	}
Sets the offset of this highlights start and end values.  The effect of the offset is that
calls to {@link #getStart()} and {@link #getEnd()} will return their values with the 
offset added.

@param newOffset The new offset into this highlight.
Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/support/Highlight.java