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// File: contracts/common/governance/IGovernance.sol
pragma solidity ^0.5.2;
interface IGovernance {
    function update(address target, bytes calldata data) external;
}
// File: contracts/common/governance/Governable.sol
pragma solidity ^0.5.2;
contract Governable {
    IGovernance public governance;
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pragma solidity 0.5.2;
// File: openzeppelin-solidity/contracts/token/ERC20/IERC20.sol
/**
 * @title ERC20 interface
 * @dev see https://github.com/ethereum/EIPs/issues/20
 */
interface IERC20 {
    function transfer(address to, uint256 value) external returns (bool);
    function approve(address spender, uint256 value) external returns (bool);
    function transferFrom(address from, address to, uint256 value) external returns (bool);
    function totalSupply() external view returns (uint256);
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/**
Matic network contracts
*/
pragma solidity ^0.5.2;
contract Ownable {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev The Ownable constructor sets the original `owner` of the contract to the sender
     * account.
     */
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// File: openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol
pragma solidity ^0.5.2;
/**
 * @title ERC721 token receiver interface
 * @dev Interface for any contract that wants to support safeTransfers
 * from ERC721 asset contracts.
 */
contract IERC721Receiver {
    /**
     * @notice Handle the receipt of an NFT
     * @dev The ERC721 smart contract calls this function on the recipient
     * after a `safeTransfer`. This function MUST return the function selector,
     * otherwise the caller will revert the transaction. The selector to be
     * returned can be obtained as `this.onERC721Received.selector`. This
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/**
Matic network contracts
*/
pragma solidity ^0.5.2;
interface IGovernance {
    function update(address target, bytes calldata data) external;
}
contract Governable {
    IGovernance public governance;
    constructor(address _governance) public {
        governance = IGovernance(_governance);
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// File: contracts/common/governance/IGovernance.sol
pragma solidity ^0.5.2;
interface IGovernance {
    function update(address target, bytes calldata data) external;
}
// File: contracts/common/governance/Governable.sol
pragma solidity ^0.5.2;
contract Governable {
    IGovernance public governance;
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// File: solidity-rlp/contracts/RLPReader.sol
// SPDX-License-Identifier: Apache-2.0
/*
* @author Hamdi Allam hamdi.allam97@gmail.com
* Please reach out with any questions or concerns
*/
pragma solidity >=0.5.0 <0.7.0;
library RLPReader {
    uint8 constant STRING_SHORT_START = 0x80;
    uint8 constant STRING_LONG_START  = 0xb8;
    uint8 constant LIST_SHORT_START   = 0xc0;
    uint8 constant LIST_LONG_START    = 0xf8;
    uint8 constant WORD_SIZE = 32;
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