public Register getTerminalRegister() {
		return registerMappings.getGhidraReg(lastRegister);
	}
Returns the {@link Register register} that holds the contents of the object that the
{@link DWARFExpression expression} points to.
<p>
Note, you should check {@link #isDeref()} to see if the register is just a pointer
to the object instead of the object itself.

@return
Ghidra/Features/Base/src/main/java/ghidra/app/util/bin/format/dwarf/expression/DWARFExpressionEvaluator.java