https://travis-ci.org/github/bitcoin/bitcoin/jobs/680452476#L6107
"                                                              \"now\" can be specified to bypass scanning, for keys which are known to never have been used, and\n"
        "                                                              0 can be specified to scan the entire blockchain. Blocks up to 2 hours before the earliest key\n"
        "                                                              creation time of all keys being imported by the importmulti call will be scanned.",
                                         "", {"timestamp | \"now\"", "integer / string"}
                                    },
                                    {"redeemscript", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "Allowed only if the scriptPubKey is a P2SH or P2SH-P2WSH address/scriptPubKey"},
                                    {"witnessscript", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "Allowed only if the scriptPubKey is a P2SH-P2WSH or P2WSH address/scriptPubKey"},
                                    {"pubkeys", RPCArg::Type::ARR,  "empty array", "Array of strings giving pubkeys to import. They must occur in P2PKH or P2WPKH scripts. They are not required when the private key is also provided (see the \"keys\" argument).",
                                        {
                                            {"pubKey", RPCArg::Type::STR, RPCArg::Optional::OMITTED, ""},
                                        }
                                    },
                                    {"keys", RPCArg::Type::ARR,  "empty array", "Array of strings giving private keys to import. The corresponding public keys must occur in the output or redeemscript.",
                                        {
                                            {"key", RPCArg::Type::STR, RPCArg::Optional::OMITTED, ""},
                                        }
                                    },
                                    {"range", RPCArg::Type::RANGE, RPCArg::Optional::OMITTED, "If a ranged descriptor is used, this specifies the end or the range (in the form [begin,end]) to import"},
                                    {"internal", RPCArg::Type::BOOL,  "false", "Stating whether matching outputs should be treated as not incoming payments (also known as change)"},
                                    {"watchonly", RPCArg::Type::BOOL,  "false", "Stating whether matching outputs should be considered watchonly."},
                                    {"label", RPCArg::Type::STR,  "''", "Label to assign to the address, only allowed with internal=false"},
                                    {"keypool", RPCArg::Type::BOOL,  "false", "Stating whether imported public keys should be added to the keypool for when users request new addresses. Only allowed when wallet private keys are disabled"},
                                },
                            },
                        },
                        "\"requests\""},
                    {"options", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED_NAMED_ARG, "",
                        {
                            {"rescan", RPCArg::Type::BOOL,  "true", "Stating if should rescan the blockchain after all imports"},
                        },