@@ -0,0 +1,623 @@
+package org.nwapw.abacus.function;%0A%0Apublic abstract class Operator %7B%0A%0A    private OperatorAssociativity associativity;%0A    private int precedence;%0A    private Function function;%0A%0A    public Operator(OperatorAssociativity associativity, int precedence, Function function)%7B%0A        this.associativity = associativity;%0A        this.precedence = precedence;%0A        this.function = function;%0A    %7D%0A%0A    public OperatorAssociativity getAssociativity() %7B%0A        return associativity;%0A    %7D%0A%0A    public int getPrecedence() %7B%0A        return precedence;%0A    %7D%0A%0A    public Function getFunction() %7B%0A        return function;%0A    %7D%0A%0A%7D%0A

Add the operator that had been in use by Plugin and PluginManager.