public boolean isFree() {
		return true;
	}
Returns the word offset into the address space this is defined within

The word size is defined in the Language's .slaspec file with the
"WORDSIZE" argument when DEFINEing a memory SPACE (capitalization is
for emphasis; the directives are actually lowercase).

@return the word offset into the address space this is defined within
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/Varnode.java