private IBuiltComponentMapping GetMappingWithSameReferenceType(string componentType = "MyType", string rootComponentName = "Employees")
{
var mapping = new ComponentMapping <Employee>(componentType);
mapping.WithReference(emp => emp.EmployedIn, "test_ref");
mapping.WithReference(emp => emp.Roles, "test_ref");
mapping.WithPreexistingHierarchyReference(rootComponentName);
return(mapping);
}