code: public CloudWatchAlarmDefinition withDimensions(MetricDimension... dimensions) {
          if (this.dimensions == null) {
              setDimensions(new com.amazonaws.internal.SdkInternalList<MetricDimension>(dimensions.length));
          }
          for (MetricDimension ele : dimensions) {
              this.dimensions.add(ele);
          }
          return this;
      }
docs: <p>
  A CloudWatch metric dimension.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setDimensions(java.util.Collection)} or {@link #withDimensions(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param dimensions
  A CloudWatch metric dimension.
  @return Returns a reference to this object so that method calls can be chained together.