code: public DescribeLaunchTemplateVersionsResult withLaunchTemplateVersions(LaunchTemplateVersion... launchTemplateVersions) {
          if (this.launchTemplateVersions == null) {
              setLaunchTemplateVersions(new com.amazonaws.internal.SdkInternalList<LaunchTemplateVersion>(launchTemplateVersions.length));
          }
          for (LaunchTemplateVersion ele : launchTemplateVersions) {
              this.launchTemplateVersions.add(ele);
          }
          return this;
      }
docs: <p>
  Information about the launch template versions.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setLaunchTemplateVersions(java.util.Collection)} or
  {@link #withLaunchTemplateVersions(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param launchTemplateVersions
  Information about the launch template versions.
  @return Returns a reference to this object so that method calls can be chained together.