Gets the entity type filters for the entity names specified. It will use the object aliases specified for the entity names. It will filter out supertypes if the subtype is also in the list. Routine is used to add type filters to typedlists automatically. It will return null (so no type filters) if siblings are detected, i.e. a name is detected that's not in the hierarchy path of the deepest leaf.

public IPredicateExpression GetEntityTypeFilters(
	Dictionary<string, string> entityNamesWithAliases
)

Public Function GetEntityTypeFilters ( 
	entityNamesWithAliases As Dictionary(Of String, String)
) As IPredicateExpression