component :: binary | tuple

composite_id :: binary

field ::
  binary |
  component |
  [binary] |
  [component]

item_type ::
  :field |
  :component |
  :repetition |
  :subcomponent

repetition :: non_neg_integer

segment_id :: binary

sequence :: pos_integer

subcomponent :: binary | tuple

value ::
  binary |
  integer |
  float |
  :calendar.date |
  :calendar.datetime

value_type ::
  :string |
  :integer |
  :float |
  :date |
  :datetime