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: _vpc_configuration_description.rs
    path of file: ./repos/aws-sdk-rust/sdk/kinesisanalyticsv2/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>Describes the parameters of a VPC used by the application.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct VpcConfigurationDescription {
    /// <p>The ID of the VPC configuration.</p>
    pub vpc_configuration_id: ::std::string::String,
    /// <p>The ID of the associated VPC.</p>
    pub vpc_id: ::std::string::String,
    /// <p>The array of <a href="https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_Subnet.html">Subnet
    
    pub fn build(self) -> ::std::result::Result<crate::types::VpcConfigurationDescription, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::VpcConfigurationDescription {
            vpc_configuration_id: self.vpc_configuration_id.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "vpc_configuration_id",
                    "vpc_configuration_id was not specified but it is required when building VpcConfigurationDescription",
                )
            })?,
            vpc_id: self.vpc_id.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "vpc_id",
                    "vpc_id was not specified but it is required when building VpcConfigurationDescription",
                )
            })?,
            subnet_ids: self.subnet_ids.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "subnet_ids",
                    "subnet_ids was not specified but it is required when building VpcConfigurationDescription",
                )
            })?,
            security_group_ids: self.security_group_ids.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "security_group_ids",
                    "security_group_ids was not specified but it is required when building VpcConfigurationDescription",
                )
            })?,
        })
    }