docs: public NetworkAcl withAssociations(NetworkAclAssociation... associations) {
          if (this.associations == null) {
              setAssociations(new com.amazonaws.internal.SdkInternalList<NetworkAclAssociation>(associations.length));
          }
          for (NetworkAclAssociation ele : associations) {
              this.associations.add(ele);
          }
          return this;
      }