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: _list_maps_response_entry.rs
    path of file: ./repos/aws-sdk-rust/sdk/location/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 details of an existing map resource in your Amazon Web Services account.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Deb
    
    pub fn build(self) -> ::std::result::Result<crate::types::ListMapsResponseEntry, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::ListMapsResponseEntry {
            map_name: self.map_name.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "map_name",
                    "map_name was not specified but it is required when building ListMapsResponseEntry",
                )
            })?,
            description: self.description.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "description",
                    "description was not specified but it is required when building ListMapsResponseEntry",
                )
            })?,
            data_source: self.data_source.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "data_source",
                    "data_source was not specified but it is required when building ListMapsResponseEntry",
                )
            })?,
            pricing_plan: self.pricing_plan,
            create_time: self.create_time.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "create_time",
                    "create_time was not specified but it is required when building ListMapsResponseEntry",
                )
            })?,
            update_time: self.update_time.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "update_time",
                    "update_time was not specified but it is required when building ListMapsResponseEntry",
                )
            })?,
        })
    }