public VectorSTL<OpTpl> createUserOpNoOut(Location location, UserOpSymbol sym,
			VectorSTL<ExprTree> param) {
		entry("createUserOpNoOut", sym, param);
		OpTpl op = new OpTpl(location, OpCode.CPUI_CALLOTHER);
		VarnodeTpl vn = new VarnodeTpl(sym.location, new ConstTpl(getConstantSpace()),
			new ConstTpl(ConstTpl.const_type.real, sym.getIndex()),
			new ConstTpl(ConstTpl.const_type.real, 4));
		op.addInput(vn);
		return ExprTree.appendParams(op, param);
	}
Handle a sleigh 'macro' invocation, returning the resulting p-code op templates (OpTpl)

@param location is the file/line where the macro is invoked
@param sym MacroSymbol is the macro symbol
@param param is the parsed list of operand expressions
@return a list of p-code op templates
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/pcodeCPort/slgh_compile/PcodeCompile.java