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: _topic_refresh_schedule.rs
    path of file: ./repos/aws-sdk-rust/sdk/quicksight/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>A structure that represents a topic refresh schedule.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct TopicRefreshSchedule {
    /// <p>A Boolean value that controls whether to schedule is enabled.</p>
    pub is_enabled: bool,
   
    
    pub fn build(self) -> ::std::result::Result<crate::types::TopicRefreshSchedule, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::TopicRefreshSchedule {
            is_enabled: self.is_enabled.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "is_enabled",
                    "is_enabled was not specified but it is required when building TopicRefreshSchedule",
                )
            })?,
            based_on_spice_schedule: self.based_on_spice_schedule.unwrap_or_default(),
            starting_at: self.starting_at,
            timezone: self.timezone,
            repeat_at: self.repeat_at,
            topic_schedule_type: self.topic_schedule_type,
        })
    }