@Override
	public RefType getValue(Reference rowObject, Settings settings, Program program,
			ServiceProvider serviceProvider) throws IllegalArgumentException {
		Listing listing = program.getListing();
		RefType referenceType = rowObject.getReferenceType();
		if (referenceType == RefType.INDIRECTION) {
			Instruction instruction = listing.getInstructionAt(rowObject.getFromAddress());
			if (instruction != null) {
				FlowType flowType = instruction.getFlowType();
				return flowType;
			}
		}
		return referenceType;
	}
This table field displays the reference type for the reference 
associated with a row in the table.
Ghidra/Features/Base/src/main/java/ghidra/util/table/field/ReferenceTypeTableColumn.java