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: _cloud_trail_details.rs
    path of file: ./repos/aws-sdk-rust/sdk/accessanalyzer/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 information about CloudTrail access.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct CloudTrailDetails {
    /// <p>A <code>Trail</code> object that contains settings for a trail.</p>
    pub trails: ::std::vec::Vec<crate::types::Trail>,
    /// <p>The ARN of the service role that IAM Access Analyzer uses to access your CloudTrail trail
    
    pub fn build(self) -> ::std::result::Result<crate::types::CloudTrailDetails, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::CloudTrailDetails {
            trails: self.trails.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "trails",
                    "trails was not specified but it is required when building CloudTrailDetails",
                )
            })?,
            access_role: self.access_role.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "access_role",
                    "access_role was not specified but it is required when building CloudTrailDetails",
                )
            })?,
            start_time: self.start_time.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "start_time",
                    "start_time was not specified but it is required when building CloudTrailDetails",
                )
            })?,
            end_time: self.end_time,
        })
    }