docs: public DBInstance withDBSecurityGroups(DBSecurityGroupMembership... dBSecurityGroups) {
          if (this.dBSecurityGroups == null) {
              setDBSecurityGroups(new java.util.ArrayList<DBSecurityGroupMembership>(dBSecurityGroups.length));
          }
          for (DBSecurityGroupMembership ele : dBSecurityGroups) {
              this.dBSecurityGroups.add(ele);
          }
          return this;
      }