ExplainNode
interface ExplainNode  extends OperationNode {
readonly format?: ExplainFormat;
readonly kind: "ExplainNode";
readonly options?: OperationNode;
}const ExplainNode: Readonly<{
is(node: OperationNode): node is ExplainNode; 
create(format?: ExplainFormat, options?: OperationNode): ExplainNode; 
}>;