`foo = append(foo, bar)`.

`foo = bar`.

HintDiscriminatedDisjunctionOfRefs indicates that the struct was previously represented in the IR by a disjunction of a fixed list of references to structs, the original definition of which is associated to this hint.

HintDisjunctionOfScalars indicates that the struct was previously represented in the IR by a disjunction of scalars (+ array), the original definition of which is associated to this hint.

HintImplementsVariant indicates that a type implements a variant.

HintSkipVariantPluginRegistration preserves the variant hint on a type, but tells the jennies to not register it as a plugin.

HintStringFormatDateTime hints refers to a string that should be formatted as a datetime as defined by RFC 3339, section 5.6 (ex: 2017-07-21T17:32:28Z).

`foo[key] = bar`.

named declaration of a type.

Struct representing every type defined by the IR.

meant to be used by jennies, to gain a finer control on the codegen from schemas.