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: _update_relational_database_input.rs
    path of file: ./repos/aws-sdk-rust/sdk/lightsail/src/operation/update_relational_database
    
    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.
#[allow(missing_docs)] // documentation missing in model
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq)]
pub struct UpdateRelationalDatabaseInput {
    /// <p>The name of your Lightsail database resource to update.</p>
    pub relational_database_name: ::std::option::Option<::std::string::String>,
    /// <p>The password for the master user. The password can include any printable ASCII character except "/", """, or "@".</p>
    /// <p>My<b>SQL</b></p>
    /// <p>Constraints: Must contain 
    
    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
        let mut formatter = f.debug_struct("UpdateRelationalDatabaseInputBuilder");
        formatter.field("relational_database_name", &self.relational_database_name);
        formatter.field("master_user_password", &"*** Sensitive Data Redacted ***");
        formatter.field("rotate_master_user_password", &self.rotate_master_user_password);
        formatter.field("preferred_backup_window", &self.preferred_backup_window);
        formatter.field("preferred_maintenance_window", &self.preferred_maintenance_window);
        formatter.field("enable_backup_retention", &self.enable_backup_retention);
        formatter.field("disable_backup_retention", &self.disable_backup_retention);
        formatter.field("publicly_accessible", &self.publicly_accessible);
        formatter.field("apply_immediately", &self.apply_immediately);
        formatter.field("ca_certificate_identifier", &self.ca_certificate_identifier);
        formatter.field("relational_database_blueprint_id", &self.relational_database_blueprint_id);
        formatter.finish()
    }