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: _service_now_parameters.rs
    path of file: ./repos/aws-sdk-rust/sdk/quicksight/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 parameters for ServiceNow.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct ServiceNowParameters {
    /// <p>URL of the base site.</p>
    pub site_base_url: ::std::string::String,
}
impl ServiceNowParameters {
    /// <p>URL of the bas
    
    pub fn build(self) -> ::std::result::Result<crate::types::ServiceNowParameters, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::types::ServiceNowParameters {
            site_base_url: self.site_base_url.ok_or_else(|| {
                ::aws_smithy_types::error::operation::BuildError::missing_field(
                    "site_base_url",
                    "site_base_url was not specified but it is required when building ServiceNowParameters",
                )
            })?,
        })
    }