insertText:'\/\/ https:\/\/eips.ethereum.org\/EIPS\/eip-173\r\n\/\/ https:\/\/github.com\/0xcert\/ethereum-erc721\/blob\/master\/src\/contracts\/ownership\/ownable.sol (this example)\r\n\/\/ https:\/\/github.com\/OpenZeppelin\/openzeppelin-contracts\/blob\/master\/contracts\/access\/Ownable.sol\r\n\/\/ https:\/\/github.com\/FriendlyUser\/solidity-smart-contracts\/\/blob\/v0.2.0\/contracts\/other\/CredVert\/Ownable.sol\r\n\/\/ SPDX-License-Identifier: MIT\r\npragma solidity >=0.5.0 <0.9.0;\r\n\r\n\/**\r\n * @dev The contract has an owner address, and provides basic authorization control whitch\r\n * simplifies the implementation of user permissions. This contract is based on the source code at:\r\n * https:\/\/github.com\/OpenZeppelin\/openzeppelin-solidity\/blob\/master\/contracts\/ownership\/Ownable.sol\r\n *\/\r\ncontract Ownable\r\n{\r\n\r\n \/**\r\n * @dev Error constants.\r\n *\/\r\n string public constant NOT_CURRENT_OWNER = \"018001\";\r\n string public constant CANNOT_TRANSFER_TO_ZERO_ADDRESS = \"018002\";\r\n\r\n \/**\r\n * @dev Current owner address.\r\n *\/\r\n address public owner;\r\n\r\n \/**\r\n * @dev An event which is triggered when the owner is changed.\r\n * @param previousOwner The address of the previous owner.\r\n * @param newOwner The address of the new owner.\r\n *\/\r\n event OwnershipTransferred(\r\n address indexed previousOwner,\r\n address indexed newOwner\r\n );\r\n\r\n \/**\r\n * @dev The constructor sets the original `owner` of the contract to the sender account.\r\n *\/\r\n constructor()\r\n public\r\n {\r\n owner = msg.sender;\r\n }\r\n\r\n \/**\r\n * @dev Throws if called by any account other than the owner.\r\n *\/\r\n modifier onlyOwner()\r\n {\r\n require(msg.sender == owner, NOT_CURRENT_OWNER);\r\n _;\r\n }\r\n\r\n \/**\r\n * @dev Allows the current owner to transfer control of the contract to a newOwner.\r\n * @param _newOwner The address to transfer ownership to.\r\n *\/\r\n function transferOwnership(\r\n address _newOwner\r\n )\r\n public\r\n onlyOwner\r\n {\r\n require(_newOwner != address(0), CANNOT_TRANSFER_TO_ZERO_ADDRESS);\r\n emit OwnershipTransferred(owner, _newOwner);\r\n owner = _newOwner;\r\n }\r\n\r\n}',
documentation:'Draft: EIP-173: Implementation example, Contract Ownership Standard, A standard interface for ownership of contracts.\n\n \/\/ https:\/\/eips.ethereum.org\/EIPS\/eip-173\r\n\/\/ https:\/\/github.com\/0xcert\/ethereum-erc721\/blob\/master\/src\/contracts\/ownership\/ownable.sol (this example)\r\n\/\/ https:\/\/github.com\/OpenZeppelin\/openzeppelin-contracts\/blob\/master\/contracts\/access\/Ownable.sol\r\n\/\/ https:\/\/github.com\/FriendlyUser\/solidity-smart-contracts\/\/blob\/v0.2.0\/contracts\/other\/CredVert\/Ownable.sol\r\n\/\/ SPDX-License-Identifier: MIT\r\npragma solidity >=0.5.0 <0.9.0;\r\n\r\n\/**\r\n * @dev The contract has an owner address, and provides basic authorization control whitch\r\n * simplifies the implementation of user permissions. This contract is based on the source code at:\r\n * https:\/\/github.com\/OpenZeppelin\/openzeppelin-solidity\/blob\/master\/contracts\/ownership\/Ownable.sol\r\n *\/\r\ncontract Ownable\r\n{\r\n\r\n \/**\r\n * @dev Error constants.\r\n *\/\r\n string public constant NOT_CURRENT_OWNER = \"018001\";\r\n string public constant CANNOT_TRANSFER_TO_ZERO_ADDRESS = \"018002\";\r\n\r\n \/**\r\n * @dev Current owner address.\r\n *\/\r\n address public owner;\r\n\r\n \/**\r\n * @dev An event which is triggered when the owner is changed.\r\n * @param previousOwner The address of the previous owner.\r\n * @param newOwner The address of the new owner.\r\n *\/\r\n event OwnershipTransferred(\r\n address indexed previousOwner,\r\n address indexed newOwner\r\n );\r\n\r\n \/**\r\n * @dev The constructor sets the original `owner` of the contract to the sender account.\r\n *\/\r\n constructor()\r\n public\r\n {\r\n owner = msg.sender;\r\n }\r\n\r\n \/**\r\n * @dev Throws if called by any account other than the owner.\r\n *\/\r\n modifier onlyOwner()\r\n {\r\n require(msg.sender == owner, NOT_CURRENT_OWNER);\r\n _;\r\n }\r\n\r\n \/**\r\n * @dev Allows the current owner to transfer control of the contract to a newOwner.\r\n * @param _newOwner The address to transfer ownership to.\r\n *\/\r\n function transferOwnership(\r\n address _newOwner\r\n )\r\n public\r\n onlyOwner\r\n {\r\n require(_newOwner != address(0), CANNOT_TRANSFER_TO_ZERO_ADDRESS);\r\n emit OwnershipTransferred(owner, _newOwner);\r\n owner = _newOwner;\r\n }\r\n\r\n}',