DropViewNode
interface DropViewNode  extends OperationNode {
readonly cascade?: boolean;
readonly ifExists?: boolean;
readonly kind: "DropViewNode";
readonly materialized?: boolean;
readonly name: SchemableIdentifierNode;
}const DropViewNode: Readonly<{
is(node: OperationNode): node is DropViewNode; 
create(name: string): DropViewNode; 
cloneWith(dropView: DropViewNode, params: DropViewNodeParams): DropViewNode; 
}>;