/// <summary>
/// replaces the keys of the <paramref name="entitiesByRelationship"/> dictionary
/// with its inverse relationship attribute.
/// </summary>
/// <param name="entitiesByRelationship">Entities grouped by relationship attribute</param>
private Dictionary <RelationshipAttribute, IEnumerable> ReplaceKeysWithInverseRelationships(Dictionary <RelationshipAttribute, IEnumerable> entitiesByRelationship)
{
// when Article has one Owner (HasOneAttribute:owner) is set, there is no guarantee
// that the inverse attribute was also set (Owner has one Article: HasOneAttr:article).
// If it isn't, JADNC currently knows nothing about this relationship pointing back, and it
// currently cannot fire hooks for entities resolved through inverse relationships.
var inversableRelationshipAttributes = entitiesByRelationship.Where(kvp => kvp.Key.InverseNavigation != null);
return(inversableRelationshipAttributes.ToDictionary(kvp => _resourceGraph.GetInverse(kvp.Key), kvp => kvp.Value));
}
