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: _update_cognito_user_pool_configuration.rs
    path of file: ./repos/aws-sdk-rust/sdk/verifiedpermissions/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>Contains configuration details of a Amazon Cognito user pool for use with an identity source.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct UpdateCognitoUserPoolConfiguration {
    /// <p>The <a href="https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namesp
    
    pub fn build(self) -> ::std::result::Result<crate::types::UpdateCognitoUserPoolConfiguration, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::UpdateCognitoUserPoolConfiguration {
            user_pool_arn: self.user_pool_arn.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "user_pool_arn",
                    "user_pool_arn was not specified but it is required when building UpdateCognitoUserPoolConfiguration",
                )
            })?,
            client_ids: self.client_ids,
        })
    }