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//! Doctests for ToSchema derive macro
/// ```
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// #[derive(ToSchema)]
/// pub struct WithFields {
/// some_name: String,
/// }
/// ```
;
/// ```compile_fail
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// #[derive(ToSchema)]
/// pub struct NoFields;
/// ```
;
/// ```
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// # use std::collections::HashMap;
/// #[derive(ToSchema)]
/// pub struct WithAngleBracketPath {
/// map_field: HashMap<String, String>,
/// }
/// ```
;
/// ```
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// # use std::collections::HashMap;
/// #[derive(ToSchema)]
/// pub struct WithAttributedField {
/// #[allow_null_container_values]
/// map_field: HashMap<String, String>,
/// }
/// ```
;
/// ```compile_fail
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// #[derive(ToSchema)]
/// pub struct WithInvalidAttributeTarget {
/// #[allow_null_container_values]
/// some_name: String,
/// }
/// ```
;
/// Verify that `#[allow_null_container_values]` works on `Option<HashMap<_, _>>` fields.
/// This is needed for optional map fields like `Remove.partition_values` that can contain
/// null values.
/// ```
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// # use std::collections::HashMap;
/// #[derive(ToSchema)]
/// pub struct WithOptionalAttributedField {
/// #[allow_null_container_values]
/// map_field: Option<HashMap<String, String>>,
/// }
/// ```
;
/// Verify that `#[allow_null_container_values]` fails on `Option<_>` fields that are not maps.
/// ```compile_fail
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// #[derive(ToSchema)]
/// pub struct WithInvalidOptionalAttributeTarget {
/// #[allow_null_container_values]
/// some_name: Option<String>,
/// }
/// ```
;
/// ```compile_fail
/// # use buoyant_kernel as delta_kernel;
/// # use delta_kernel_derive::ToSchema;
/// # use syn::Token;
/// #[derive(ToSchema)]
/// pub struct WithInvalidFieldType {
/// token: Token![struct],
/// }
/// ```
;