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: _s3_destination_configuration.rs
    path of file: ./repos/aws-sdk-rust/sdk/iotanalytics/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>Configuration information for delivery of dataset contents to Amazon Simple Storage Service (Amazon S3).</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct S3DestinationConfiguration {
    /// <p>The name of the S3 bucket to which dataset contents are delivered.</p>
    pub bucket: ::std::string::String,
    /// <p>The key of the dataset co
    
    pub fn build(self) -> ::std::result::Result<crate::types::S3DestinationConfiguration, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::S3DestinationConfiguration {
            bucket: self.bucket.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "bucket",
                    "bucket was not specified but it is required when building S3DestinationConfiguration",
                )
            })?,
            key: self.key.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "key",
                    "key was not specified but it is required when building S3DestinationConfiguration",
                )
            })?,
            glue_configuration: self.glue_configuration,
            role_arn: self.role_arn.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "role_arn",
                    "role_arn was not specified but it is required when building S3DestinationConfiguration",
                )
            })?,
        })
    }