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: _action_type_permissions.rs
    path of file: ./repos/aws-sdk-rust/sdk/codepipeline/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>Details identifying the users with permissions to use the action type.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct ActionTypePermissions {
    /// <p>A list of Amazon Web Services account IDs with access to use the action type in their pipelines.<
    
    pub fn build(self) -> ::std::result::Result<crate::types::ActionTypePermissions, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::ActionTypePermissions {
            allowed_accounts: self.allowed_accounts.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "allowed_accounts",
                    "allowed_accounts was not specified but it is required when building ActionTypePermissions",
                )
            })?,
        })
    }