@Override
			public Address evaluateConstant(VarnodeContext context, Instruction instr, int pcodeop,
					Address constant, int size, DataType dataType, RefType refType) {
				return null;
			}
Check if there are any data references to this location.
@param program
@param addr
@return true if there are any data references to addr
Ghidra/Processors/ARM/src/main/java/ghidra/app/plugin/core/analysis/ArmAnalyzer.java