private boolean isNoReturnInjection(Function f, String fixupname) {
		if (fixupname == null) {
			return false;
		}
		// if the callfixup has no fallthru, set the noreturn property too
		Program program = f.getProgram();
		InjectPayload callFixup = program.getCompilerSpec()
				.getPcodeInjectLibrary()
				.getPayload(InjectPayload.CALLFIXUP_TYPE, fixupname);
		if (callFixup == null) {
			return false;
		}
		return !callFixup.isFallThru();
	}
check if the code injection does not return
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/FunctionPrototype.java