fn include_env_var(mut self) -> Self {
        assert!(
            self.default.is_none(),
            "cannot currently both set default values and include environment variables on the same config"
        );
        self.include_env_var = true;
        self
    }
/// Allows for returning a default value for this configuration option
Allows for returning a default value for this configuration option
Allows for returning a default value for this configuration option
fn include_env_var(mut self) -> Self {
        assert!(
            self.default.is_none(),
            "cannot currently both set default values and include environment variables on the same config"
        );
        self.include_env_var = true;
        self
    }
fn include_env_var ( mut self ) -> Self { assert ! ( self default is_none ( ) " " ) ; self . include_env_var = true ; self }
Allows for returning a default value for this configuration option
Allows for returning a default value for this configuration option
mut self
mut self