pub fn ser_update_phone_number_input_input(
object: &mut ::aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::operation::update_phone_number::UpdatePhoneNumberInput,
) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::SerializationError> {
if let Some(var_1) = &input.client_token {
object.key("ClientToken").string(var_1.as_str());
}
if let Some(var_2) = &input.instance_id {
object.key("InstanceId").string(var_2.as_str());
}
if let Some(var_3) = &input.target_arn {
object.key("TargetArn").string(var_3.as_str());
}
Ok(())
}