buy(binary) :: ExEasyPost.Operation.t
create(map) :: ExEasyPost.Operation.t
find(binary, map) :: ExEasyPost.Operation.t
insure(binary, number) :: ExEasypost.Operation.t
label(binary) :: ExEasyPost.Operation.t
list(map) :: ExEasyPost.Operation.t
rates(binary) :: ExEasyPost.Operation.t
refund(binary) :: ExEasyPost.Operation.t