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import { is } from "../rune/mod.ts"import { BlockRune } from "./BlockRune.ts"import { Chain } from "./ChainRune.ts"import { PatternRune } from "./PatternRune.ts"
export class BlockHashRune<out C extends Chain, out U> extends PatternRune<string, C, U> {  block() {    return this.chain.connection      .call("chain_getBlock", this.as(BlockHashRune))      .unhandle(is(null))      .into(BlockRune, this.chain, this)  }}