code: func DefaultGoerliGenesisBlock() *Genesis {
  	return &Genesis{
  		Config:     params.GoerliChainConfig,
  		Timestamp:  1548854791,
  		ExtraData:  hexutil.MustDecode("0x22466c6578692069732061207468696e6722202d204166726900000000000000e0a2bd4258d2768837baa26a28fe71dc079f84c70000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
  		GasLimit:   10485760,
  		Difficulty: big.NewInt(1),
  		Alloc:      decodePrealloc(goerliAllocData),
  	}
  }
docs: // DefaultGoerliGenesisBlock returns the Görli network genesis block.