ProtectedcurrentProtected ReadonlydocumentProtectedinitializedProtected ReadonlytypeProtectedhandleProtectedinvalidateFor the initialization of the type system, e.g. to register primitive types and operators, inference rules and validation rules, which are constant and don't depend on the actual language nodes. This method will be executed once before the first added/updated/removed language node.
This service provides the API to define the actual types, inference rules and validation rules for a textual DSL developed with Langium in order to include them into the Langium lifecycle.