code: public void setAddSubnetIds(java.util.Collection<String> addSubnetIds) {
          if (addSubnetIds == null) {
              this.addSubnetIds = null;
              return;
          }
  
          this.addSubnetIds = new com.amazonaws.internal.SdkInternalList<String>(addSubnetIds);
      }
docs: <p>
  (Interface endpoint) One or more subnet IDs in which to serve the endpoint.
  </p>
  
  @param addSubnetIds
  (Interface endpoint) One or more subnet IDs in which to serve the endpoint.