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: config.rs
    path of file: ./repos/aws-sdk-rust/sdk/workdocs/src
    
    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.

/// Configuration for a aws_sdk_workdocs service client.
///
///
/// Service configuration allows for customization of endpoints, region, credentials providers,
/// and retry configuration. Generally, it is constructed automatically for you from a shared
/// configuration loaded by the `aws-config` crate. For example:
///
/// ```ignore
/// // Load a shared config from the environment
/// let shared_config = aws_config::from_env().load().await;
/// // The client constructor automatically converts the shared config into the service config
/// let client = Client::new(&shared_config);
/// ```
///
/
    
    /// # fn example() {
    /// use aws_smithy_runtime_api::client::interceptors::context::InterceptorContext;
    /// use aws_smithy_runtime_api::client::orchestrator::OrchestratorError;
    /// use aws_smithy_runtime_api::client::retries::classifiers::{
    ///     ClassifyRetry, RetryAction, RetryClassifierPriority,
    /// };
    /// use aws_smithy_types::error::metadata::ProvideErrorMetadata;
    /// use aws_smithy_types::retry::ErrorKind;
    /// use std::error::Error as StdError;
    /// use std::marker::PhantomData;
    /// use aws_sdk_workdocs::config::{Builder, Config};
    /// # struct SomeOperationError {}
    ///
    /// const RETRYABLE_ERROR_CODES: &[&str] = [
    ///     // List error codes to be retried here...
    /// ];
    /// fn set_example_error_code_classifier(builder: &mut Builder) {
    ///     // When classifying at an operation's error type, classifiers require a generic parameter.
    ///     // When classifying the HTTP response alone, no generic is needed.
    ///     #[derive(Debug, Default)]
    ///     pub struct ExampleErrorCodeClassifier<E> {
    ///         _inner: PhantomData<E>,
    ///     }
    ///
    ///     impl<E> ExampleErrorCodeClassifier<E> {
    ///         pub fn new() -> Self {
    ///             Self {
    ///                 _inner: PhantomData,
    ///             }
    ///         }
    ///     }
    ///
    ///     impl<E> ClassifyRetry for ExampleErrorCodeClassifier<E>
    ///     where
    ///         // Adding a trait bound for ProvideErrorMetadata allows us to inspect the error code.
    ///         E: StdError + ProvideErrorMetadata + Send + Sync + 'static,
    ///     {
    ///         fn classify_retry(&self, ctx: &InterceptorContext) -> RetryAction {
    ///             // Check for a result
    ///             let output_or_error = ctx.output_or_error();
    ///             // Check for an error
    ///             let error = match output_or_error {
    ///                 Some(Ok(_)) | None => return RetryAction::NoActionIndicated,
    ///                   Some(Err(err)) => err,
    ///             };
    ///
    ///             // Downcast the generic error and extract the code
    ///             let error_code = OrchestratorError::as_operation_error(error)
    ///                 .and_then(|err| err.downcast_ref::<E>())
    ///                 .and_then(|err| err.code());
    ///
    ///             // If this error's code is in our list, return an action that tells the RetryStrategy to retry this request.
    ///             if let Some(error_code) = error_code {
    ///                 if RETRYABLE_ERROR_CODES.contains(&error_code) {
    ///                     return RetryAction::transient_error();
    ///                 }
    ///             }
    ///
    ///             // Otherwise, return that no action is indicated i.e. that this classifier doesn't require a retry.
    ///             // Another classifier may still classify this response as retryable.
    ///             RetryAction::NoActionIndicated
    ///         }
    ///
    ///         fn name(&self) -> &'static str { "Example Error Code Classifier" }
    ///     }
    ///
    ///     builder.push_retry_classifier(ExampleErrorCodeClassifier::<SomeOperationError>::new())
    /// }
    ///
    /// let mut builder = Config::builder();
    /// set_example_error_code_classifier(&mut builder);
    /// let config = builder.build();
    /// # }
    /// # }