Get list of Lexicon annotation layers descriptions, i.e. for all Lexicon annotation layers that are direct
children of Lexicon tag, their names and attributes are encapsulated as IODescriptorTcfxb objects inside the list.
Get list of TextCorpus annotation layers descriptions, i.e. for all TextCorpus annotation layers, such
as text, tokens, sentences, lemmas, so on, present in the data, their names and attributes are encapsulated
as IODescriptorTcfxb objects inside the list.