Macro opg::describe_type

macro_rules! describe_type {
    (raw_model => $model:ident) => { ... };
    (raw_type => {
        $(description: $description:literal)?
        ident: $type:ident
    }) => { ... };
    (string => {
        $(description: $description:literal)?
        $(format: $format:literal)?
        $(example: $example:literal)?
        $(variants: [$($variants:literal),*])?
    }) => { ... };
    (number => {
        $(description: $description:literal)?
        $(format: $format:literal)?
        $(example: $example:literal)?
    }) => { ... };
    (integer => {
        $(description: $description:literal)?
        $(format: $format:literal)?
        $(example: $example:literal)?
    }) => { ... };
    (boolean => {
        $(description: $description:literal)?
    }) => { ... };
    (array => {
        $(description: $description:literal)?
        items: ($($property_tail:tt)*)
    }) => { ... };
    (object => {
        $(description: $description:literal)?
        properties: {
            $($property_name:ident$([$required:tt])?: ($($property_tail:tt)*))*
        }
    }) => { ... };
    (@object_property [$properties:ident, $required:ident] $property_name:ident: ($($property_tail:tt)*)) => { ... };
    (@object_property [$properties:ident, $required:ident] $property_name:ident[required]: ($($property_tail:tt)*)) => { ... };
    (@object_property_value link => $ref:literal) => { ... };
    (@object_property_value link => $ref:ident) => { ... };
    (@object_property_value $type:ident => $($tail:tt)*) => { ... };
}