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: _restore_testing_selection_for_list.rs
    path of file: ./repos/aws-sdk-rust/sdk/backup/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>This contains metadata about a restore testing selection.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct RestoreTestingSelectionForList {
    /// <p>This is the date and time that a restore testing selection was created, in Unix format and Coordinated Universal Time (UTC). The value of <code>CreationTime</code> is accurate to milliseconds. For example, the value 1516925490.087 represents Friday, January 26,2018 12:11:30.087 AM.</p>
    pub creation_time: ::aws_smithy_types::DateTime,
    /// <p>The Amazon Resource Name (ARN) of the IAM role that Backup uses to create the target resource; for example: <code>arn:aws:iam::123456789012:role/S3Access</code>.</p>
    pub iam_role_arn: ::std::string::String,
    /// <p>The type of Amazon Web Services resource included in a restore testing selection; for example, an Amazon EBS volume or an Amazon RDS database.</p>
    pub protected_resource_type: ::std::string::String,
    /// <p>Unique string that is the name of the restore testing plan.</p>
    /// <p>The name cannot be changed after creation. The name must consist of only alphanumeric characters and underscores. Maximum length is 50.</p>
    pub restore_testing_plan_name: ::std::string::String,
    /// <p>Unique name of a restore testing selection.</p>
    pub restore_
    
    pub fn build(self) -> ::std::result::Result<crate::types::RestoreTestingSelectionForList, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::RestoreTestingSelectionForList {
            creation_time: self.creation_time.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "creation_time",
                    "creation_time was not specified but it is required when building RestoreTestingSelectionForList",
                )
            })?,
            iam_role_arn: self.iam_role_arn.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "iam_role_arn",
                    "iam_role_arn was not specified but it is required when building RestoreTestingSelectionForList",
                )
            })?,
            protected_resource_type: self.protected_resource_type.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "protected_resource_type",
                    "protected_resource_type was not specified but it is required when building RestoreTestingSelectionForList",
                )
            })?,
            restore_testing_plan_name: self.restore_testing_plan_name.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "restore_testing_plan_name",
                    "restore_testing_plan_name was not specified but it is required when building RestoreTestingSelectionForList",
                )
            })?,
            restore_testing_selection_name: self.restore_testing_selection_name.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "restore_testing_selection_name",
                    "restore_testing_selection_name was not specified but it is required when building RestoreTestingSelectionForList",
                )
            })?,
            validation_window_hours: self.validation_window_hours.unwrap_or_default(),
        })
    }