code: public DescribeLaunchConfigurationsRequest withLaunchConfigurationNames(String... launchConfigurationNames) {
          if (this.launchConfigurationNames == null) {
              setLaunchConfigurationNames(new com.amazonaws.internal.SdkInternalList<String>(launchConfigurationNames.length));
          }
          for (String ele : launchConfigurationNames) {
              this.launchConfigurationNames.add(ele);
          }
          return this;
      }
docs: <p>
  The launch configuration names. If you omit this parameter, all launch configurations are described.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setLaunchConfigurationNames(java.util.Collection)} or
  {@link #withLaunchConfigurationNames(java.util.Collection)} if you want to override the existing values.
  </p>
  
  @param launchConfigurationNames
  The launch configuration names. If you omit this parameter, all launch configurations are described.
  @return Returns a reference to this object so that method calls can be chained together.