package dev.metaschema.core.metapath.item.node;
   
   import dev.metaschema.core.metapath.item.IItem;
   import edu.umd.cs.findbugs.annotations.Nullable;
   
   /**
    * This feature interface represents an item that has no associated value data.
    * <p>
   * This will occur when an {@link IItem} represents a Metaschema definition or
   * instance that is not associated with data. This is typical when constructing
   * items for querying a Metaschema directly, instead of content which will
   * always have data.
   */
  public interface IFeatureNoDataValuedItem extends IItem {
    @Override
    @Nullable
    default Object getValue() {
      // no value
      return null;
    }
  
    @Override
    default boolean hasValue() {
      // no value
      return false;
    }
  }