@type t() :: %Exograph.CallEdge{
  call_site_fragment_id: integer() | nil,
  callee_node_id: integer(),
  callee_qualified_name: String.t(),
  caller_node_id: integer(),
  caller_qualified_name: String.t(),
  column: pos_integer() | nil,
  file_id: integer() | nil,
  id: integer() | nil,
  line: pos_integer() | nil,
  metadata: map(),
  package_id: integer() | nil,
  package_version_id: integer() | nil
}