constructor(variable, operator, value, andOr = LOGICAL.AND) {
        this.variable = variable;
        this.operator = operator;
        this.value = value;
        this.andOr = andOr;
    }
@param {string} variable ID of variable to test against
@param {string} operator ID of operator to test the variable with
@param {string} value Value to test with the operator
@param {LOGICAL} andOr Connects expression result with previous group/expression results