@type t() :: %RustQ.Syn.Method{
  args: [RustQ.Syn.Arg.t()],
  docs: [String.t()],
  name: String.t(),
  returns: String.t() | nil,
  returns_ast: RustQ.Syn.type() | nil,
  signature: String.t() | nil,
  signature_ast: RustQ.Syn.Signature.t() | nil,
  source_line: pos_integer() | nil,
  source_path: Path.t() | nil,
  visibility: :public | :private
}