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: _posix_profile.rs
    path of file: ./repos/aws-sdk-rust/sdk/transfer/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 full POSIX identity, including user ID (<code>Uid</code>), group ID (<code>Gid</code>), and any secondary groups IDs (<code>SecondaryGids</code>), that controls your users' access to your Amazon EFS file systems. The POSIX permissions that are set on files and directories in your file system determine the level of access your users get w
    
    pub fn build(self) -> ::std::result::Result<crate::types::PosixProfile, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::PosixProfile {
            uid: self.uid.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "uid",
                    "uid was not specified but it is required when building PosixProfile",
                )
            })?,
            gid: self.gid.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "gid",
                    "gid was not specified but it is required when building PosixProfile",
                )
            })?,
            secondary_gids: self.secondary_gids,
        })
    }