///-------------------------------------------------------------------------------------------------
/// <summary>
/// Gets the relationships in this collection.
/// </summary>
/// <param name="metadata">
/// (Optional) the metadata.
/// </param>
/// <param name="start">
/// (Optional) the start.
/// </param>
/// <param name="end">
/// (Optional) the end.
/// </param>
/// <param name="skip">
/// (Optional) the skip.
/// </param>
/// <returns>
/// An enumerator that allows foreach to be used to process the relationships in this collection.
/// </returns>
///-------------------------------------------------------------------------------------------------
public virtual IEnumerable <IModelRelationship> GetRelationships(ISchemaRelationship metadata = null, IModelElement start = null, IModelElement end = null, int skip = 0)
{
CheckInitialized();
return(L1Cache.GetRelationships(metadata, start, end, skip));
}