[T] Statement

type Statement:
  | ImportStatementNode
  | ModelStatementNode
  | ScalarStatementNode
  | NamespaceStatementNode
  | InterfaceStatementNode
  | UnionStatementNode
  | UsingStatementNode
  | EnumStatementNode
  | AliasStatementNode
  | OperationStatementNode
  | DecoratorDeclarationStatementNode
  | FunctionDeclarationStatementNode
  | AugmentDecoratorStatementNode
  | ConstStatementNode
  | CallExpressionNode
  | EmptyStatementNode
  | InvalidStatementNode
  | ProjectionStatementNode;