code: package io.ray.api.options;
  
  import io.ray.api.Ray;
  import io.ray.api.placementgroup.PlacementStrategy;
  import java.util.List;
  import java.util.Map;
  
  /** The options for creating placement group. */
  public class PlacementGroupCreationOptions {
    public final String name;
    public final List<Map<String, Double>> bundles;
    public final PlacementStrategy strategy;
  
    public PlacementGroupCreationOptions(
        String name, List<Map<String, Double>> bundles, PlacementStrategy strategy) {
      if (bundles == null || bundles.isEmpty()) {
        throw new IllegalArgumentException(
            "`Bundles` must be specified when creating a new placement group.");
      }
      boolean bundleResourceValid =
          bundles.stream()
              .allMatch(bundle -> bundle.values().stream().allMatch(resource -> resource > 0));
  
      if (!bundleResourceValid) {
        throw new IllegalArgumentException(
            "Bundles cannot be empty or bundle's resource must be positive.");
      }
      if (strategy == null) {
        throw new IllegalArgumentException(
            "`PlacementStrategy` must be specified when creating a new placement group.");
      }
      this.name = name;
      this.bundles = bundles;
      this.strategy = strategy;
    }
  
    /** The inner class for building PlacementGroupCreationOptions. */
    public static class Builder {
      private String name;
      private List<Map<String, Double>> bundles;
      private PlacementStrategy strategy;
  
      /**
       * Set the name of a named placement group. This named placement group is accessible in this
       * namespace by this name via {@link Ray#getPlacementGroup(java.lang.String)} or in other
       * namespaces via {@link PlacementGroups#getPlacementGroup(java.lang.String, java.lang.String)}.
       *
       * @param name The name of the named placement group.
       * @return self
       */
      public Builder setName(String name) {
        if (this.name != null) {
          throw new IllegalArgumentException("Repeated assignment of the name is not allowed!");
        }
        this.name = name;
        return this;
      }
  
      /**
       * Set the Pre-allocated resource list. Bundle is a collection of resources used to reserve
       * resources on the raylet side.
       *
       * @param bundles The Pre-allocated resource list.
       * @return self
       */
      public Builder setBundles(List<Map<String, Double>> bundles) {
        this.bundles = bundles;
        return this;
      }
  
      /**
       * Set the placement strategy used to control the placement relationship between bundles. More
       * details refer to {@link PlacementStrategy}
       *
       * @param strategy The placement strategy between bundles.
       * @return self
       */
      public Builder setStrategy(PlacementStrategy strategy) {
        this.strategy = strategy;
        return this;
      }
  
      public PlacementGroupCreationOptions build() {
        return new PlacementGroupCreationOptions(name, bundles, strategy);
      }
    }
  }
  