code: public TraceSummary withResponseTimeRootCauses(ResponseTimeRootCause... responseTimeRootCauses) {
          if (this.responseTimeRootCauses == null) {
              setResponseTimeRootCauses(new java.util.ArrayList<ResponseTimeRootCause>(responseTimeRootCauses.length));
          }
          for (ResponseTimeRootCause ele : responseTimeRootCauses) {
              this.responseTimeRootCauses.add(ele);
          }
          return this;
      }
docs: <p>
  A collection of ResponseTimeRootCause structures corresponding to the trace segments.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setResponseTimeRootCauses(java.util.Collection)} or
  {@link #withResponseTimeRootCauses(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param responseTimeRootCauses
  A collection of ResponseTimeRootCause structures corresponding to the trace segments.
  @return Returns a reference to this object so that method calls can be chained together.