cast index-erc7201

计算存储槽，如 ERC-7201: Namespaced Storage Layout 所指定

$ cast index-erc7201 --help

用法： cast index-erc7201 [OPTIONS] [ID]

参数：
  [ID]  The arbitrary identifier

选项：
      --formula-id <FORMULA_ID>
          The formula ID. Currently the only supported formula is `erc7201`
          [default: erc7201]
  -h, --help
          Print help