@type t() :: %Figler.Schema.TextSelection{
  canvas_guid: Figler.Schema.GUID.t() | nil,
  selection_boxes: [Figler.Schema.Rect.t()] | nil,
  table_cell_col_id: Figler.Schema.GUID.t() | nil,
  table_cell_row_id: Figler.Schema.GUID.t() | nil,
  text_node_guid: Figler.Schema.GUID.t() | nil,
  text_node_or_containing_if_guid: Figler.Schema.GUID.t() | nil,
  text_selection_range: Figler.Schema.Vector.t() | nil
}