Typed Inttegro request parameters.
@type t() :: %Inttegro.Customers.CustomerDataInput{ custom_data: %{optional(String.t()) => term()} | nil, email_address: String.t(), name: String.t(), phone_number: String.t(), reference: String.t() | nil }
@spec from_map(map()) :: t()
@spec new!(map() | keyword()) :: t()
@spec to_map(t()) :: map()