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: _assignment.rs
    path of file: ./repos/aws-sdk-rust/sdk/mturk/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>The Assignment data structure represents a single assignment of a HIT to a Worker. The assignment tracks the Worker's efforts to complete the HIT, and contains the results for later retrieval.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct Assignment {
    /// <p>A unique identifier for the assignment.</p>
    pub assignment_id: ::std::option::Option<
    
    pub fn build(self) -> crate::types::Assignment {
        crate::types::Assignment {
            assignment_id: self.assignment_id,
            worker_id: self.worker_id,
            hit_id: self.hit_id,
            assignment_status: self.assignment_status,
            auto_approval_time: self.auto_approval_time,
            accept_time: self.accept_time,
            submit_time: self.submit_time,
            approval_time: self.approval_time,
            rejection_time: self.rejection_time,
            deadline: self.deadline,
            answer: self.answer,
            requester_feedback: self.requester_feedback,
        }
    }