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impl crate::distance_matrix::Request<'_> {
/// Specifies the region bias. There is a London in Canada and there is a
/// London in England. By biasing the region, you help the directions
/// service choose the London you intended.
///
/// ## Arguments
///
/// * `region` ‧ A country to bias your geocoding results to.
///
/// ## Description
///
/// [Region Biasing](https://developers.google.com/maps/documentation/directions/intro#RegionBiasing)
///
/// You can set the Directions service to return results from a specific
/// region by using the `region` parameter. You may utilize any domain in
/// which the main Google Maps application has launched driving directions.
///
/// For example, a directions request for "Toledo" to "Madrid" returns
/// appropriate results when `region` is set to `Region::Spain` and "Toledo"
/// is then interpreted as the Spanish city. A directions request for
/// "Toledo" to "Madrid" sent without a `region` parameter does not return
/// results, because "Toledo" is interpreted as the city in Ohio and not
/// Spain.
///
/// ## Example
///
/// * Bias region to Canada:
/// ```rust
/// .with_region(Region::Canada)
/// ```
#[must_use] pub fn with_region(
mut self,
region: impl Into<crate::types::Region>
) -> Self {
self.region = Some(region.into());
self
} // fn
} // impl