You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: _cidr_authorization_context.rs
    path of file: ./repos/aws-sdk-rust/sdk/globalaccelerator/src/types
    
    the code of the file until where you have to start completion: // Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.

/// <p>Provides authorization for Amazon to bring a specific IP address range to a specific Amazon Web Services account using bring your own IP addresses (BYOIP).</p>
/// <p>For more information, see <a href="https://docs.aws.amazon.com/global-accelerator/latest/dg/using-byoip.html">Bring your own IP addresses (BYOIP)</a> in the <i>Global Accelerator Developer Guide</i>.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct CidrAuthorizationContext {
    /// <p>The plain-text authorization message for the prefix and account.</p>
    pub message: :
    
    pub fn build(self) -> ::std::result::Result<crate::types::CidrAuthorizationContext, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::CidrAuthorizationContext {
            message: self.message.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "message",
                    "message was not specified but it is required when building CidrAuthorizationContext",
                )
            })?,
            signature: self.signature.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "signature",
                    "signature was not specified but it is required when building CidrAuthorizationContext",
                )
            })?,
        })
    }