CreateSchemaNode
interface CreateSchemaNode  extends OperationNode {
readonly ifNotExists?: boolean;
readonly kind: "CreateSchemaNode";
readonly schema: IdentifierNode;
}const CreateSchemaNode: Readonly<{
is(node: OperationNode): node is CreateSchemaNode; 
create(schema: string, params?: CreateSchemaNodeParams): CreateSchemaNode; 
cloneWith(createSchema: CreateSchemaNode, params: CreateSchemaNodeParams): CreateSchemaNode; 
}>;