code: public java.util.List<String> getCustomSecurityGroupIds() {
          if (customSecurityGroupIds == null) {
              customSecurityGroupIds = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return customSecurityGroupIds;
      }
docs: <p>
  An array containing the layer custom security group IDs.
  </p>
  
  @return An array containing the layer custom security group IDs.