private boolean checkAlreadyInFunctionAbove(Program program, Address addr) {
			Function funcAbove = getFunctionAbove(program, addr);
			return checkAlreadyInFunctionAbove(program, addr, funcAbove);
		}
Check if there are only pure data references to the location

@param program program to check
@param addrToCheck location to check
@return true if there are only pure data references (no flow, or r/w)
Ghidra/Features/BytePatterns/src/main/java/ghidra/app/analyzers/FunctionStartAnalyzer.java