docs: public Cluster withSecurityGroups(SecurityGroupMembership... securityGroups) {
          if (this.securityGroups == null) {
              setSecurityGroups(new java.util.ArrayList<SecurityGroupMembership>(securityGroups.length));
          }
          for (SecurityGroupMembership ele : securityGroups) {
              this.securityGroups.add(ele);
          }
          return this;
      }