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: _cost_allocation_tag_status_entry.rs
    path of file: ./repos/aws-sdk-rust/sdk/costexplorer/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 cost allocation tag status. The status of a key can either be active or inactive.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct CostAllocationTagStatusEntry {
    /// <p>The key for the cost allocation tag.</p>
    pub tag_key: ::std::string::String,
    /// <p>The status of a cost allocation tag.</p>
    pub status: crate::types::CostAlloca
    
    pub fn build(self) -> ::std::result::Result<crate::types::CostAllocationTagStatusEntry, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::CostAllocationTagStatusEntry {
            tag_key: self.tag_key.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "tag_key",
                    "tag_key was not specified but it is required when building CostAllocationTagStatusEntry",
                )
            })?,
            status: self.status.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "status",
                    "status was not specified but it is required when building CostAllocationTagStatusEntry",
                )
            })?,
        })
    }