code: func bindTopicTypeJava(kind abi.Type) string {
  	bound := bindTypeJava(kind)
  	if bound == "String" || bound == "Bytes" {
  		bound = "Hash"
  	}
  	return bound
  }
docs: // bindTypeGo converts a Solidity topic type to a Java one. It is almost the same
  // funcionality as for simple types, but dynamic types get converted to hashes.