/// Generates a [`RootSchema`](crate::schema::RootSchema) for the given type using default settings.
///
/// The type must implement [`JsonSchema`](crate::JsonSchema).
///
/// # Example
/// ```
/// use schemars::{schema_for, JsonSchema};
///
/// #[derive(JsonSchema)]
/// struct MyStruct {
/// foo: i32,
/// }
///
/// let my_schema = schema_for!(MyStruct);
/// ```