message: Add conjunction readonly property into BinaryOperand,
diff: @@ -50,6 +50,9 @@ export class BinaryOperand extends Operand {
  public get isConjunction() {
  return this.operatorName == "or" || this.operatorName == "and";
  }
  + public get conjunction(): string {
  + return this.isConjunction ? this.operatorName : "";
  + }
  public get leftOperand() {
  return this.left;
  }
  