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: _conflict_exception.rs
    path of file: ./repos/aws-sdk-rust/sdk/transfer/src/types/error
    
    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>This exception is thrown when the <code>UpdateServer</code> is called for a file transfer protocol-enabled server that has VPC as the endpoint type and the server's <code>VpcEndpointID</code> is not in the available state.</p>
#[non_exhaustive]
#[derive(::s
    
    pub fn build(self) -> ::std::result::Result<crate::types::error::ConflictException, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::error::ConflictException {
            message: self.message.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "message",
                    "message was not specified but it is required when building ConflictException",
                )
            })?,
            meta: self.meta.unwrap_or_default(),
        })
    }