code: protected float getPropertyBoost(InternalQName propertyName)
     {
        if (indexingConfig == null)
        {
           return DEFAULT_BOOST;
        }
        else
        {
           return indexingConfig.getPropertyBoost(node, propertyName);
        }
     }
docs: Returns the boost value for the given property name.
  
  @param propertyName the name of a property.
  @return the boost value for the given property name.