code: public RespondDecisionTaskCompletedRequest withDecisions(Decision... decisions) {
          if (this.decisions == null) {
              setDecisions(new java.util.ArrayList<Decision>(decisions.length));
          }
          for (Decision ele : decisions) {
              this.decisions.add(ele);
          }
          return this;
      }
docs: <p>
  The list of decisions (possibly empty) made by the decider while processing this decision task. See the docs for
  the <a>Decision</a> structure for details.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setDecisions(java.util.Collection)} or {@link #withDecisions(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param decisions
  The list of decisions (possibly empty) made by the decider while processing this decision task. See the
  docs for the <a>Decision</a> structure for details.
  @return Returns a reference to this object so that method calls can be chained together.