@Override
				public boolean allowAccess(VarnodeContext context, Address addr) {
					return true;
				}
resolve the flow destination by computing to a single value with a restriction to a single basic block.
  
@return single flow address, null if single flow can't be resolved
Ghidra/Features/Base/src/main/java/ghidra/app/cmd/function/CreateThunkFunctionCmd.java