@Override
	public Number getLowerNumber() {
		return lowerBoundToDouble();
	}
Subclasses should return the Double value that is being filtered.

@param t The t from which to extract the Double value
@return the double value that is being filtered; convert T to a double
Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/provider/matchtable/AbstractDoubleRangeFilter.java