// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
impl super::Client {
    /// Constructs a fluent builder for the [`OptInPhoneNumber`](crate::operation::opt_in_phone_number::builders::OptInPhoneNumberFluentBuilder) operation.
    ///
    /// - The fluent builder is configurable:
    ///   - [`phone_number(impl Into<String>)`](crate::operation::opt_in_phone_number::builders::OptInPhoneNumberFluentBuilder::phone_number) / [`set_phone_number(Option<String>)`](crate::operation::opt_in_phone_number::builders::OptInPhoneNumberFluentBuilder::set_phone_number):<br>required: **true**<br><p>The phone number to opt in. Use E.164 format.</p><br>
    /// - On success, responds with [`OptInPhoneNumberOutput`](crate::operation::opt_in_phone_number::OptInPhoneNumberOutput)
    /// - On failure, responds with [`SdkError<OptInPhoneNumberError>`](crate::operation::opt_in_phone_number::OptInPhoneNumberError)
    pub fn opt_in_phone_number(&self) -> crate::operation::opt_in_phone_number::builders::OptInPhoneNumberFluentBuilder {
        crate::operation::opt_in_phone_number::builders::OptInPhoneNumberFluentBuilder::new(self.handle.clone())
    }
}