private boolean isCallFixup(Program program, Instruction instr, FlowType flowType) {
		if (!flowType.isCall()) {
			return false;
		}

		Reference[] referencesFrom = instr.getReferencesFrom();
		for (Reference reference : referencesFrom) {
			if (reference.getReferenceType().isCall()) {
				Function func =
					program.getFunctionManager().getFunctionAt(reference.getToAddress());
				if (func != null && func.getCallFixup() != null) {
					return true;
				}
			}
		}
		return false;
	}
Find out if a callother pcode op has a pcodeInjection attached to it

@param program program
@param callOtherIndex callOther ID index
@return injection payload or null if no register injections
Ghidra/Features/Decompiler/src/main/java/ghidra/app/plugin/core/analysis/DecompilerSwitchAnalyzer.java