code: public EnvironmentPropertyUpdates withPropertyGroups(PropertyGroup... propertyGroups) {
          if (this.propertyGroups == null) {
              setPropertyGroups(new java.util.ArrayList<PropertyGroup>(propertyGroups.length));
          }
          for (PropertyGroup ele : propertyGroups) {
              this.propertyGroups.add(ele);
          }
          return this;
      }
docs: <p>
  Describes updates to the execution property groups.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setPropertyGroups(java.util.Collection)} or {@link #withPropertyGroups(java.util.Collection)} if you want
  to override the existing values.
  </p>
  
  @param propertyGroups
  Describes updates to the execution property groups.
  @return Returns a reference to this object so that method calls can be chained together.