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// SPDX-License-Identifier: agpl-3.0
pragma solidity 0.6.12;

 * @title LendingPoolAddressesProviderRegistry contract
 * @dev Main registry of LendingPoolAddressesProvider of multiple Aave protocol's markets
 * - Used for indexing purposes of Aave protocol's markets
 * - The id assigned to a LendingPoolAddressesProvider refers to the market it is connected with,
 *   for example with `0` for the Aave main market and `1` for the next created
 * @author Aave
interface ILendingPoolAddressesProviderRegistry {
  event AddressesProviderRegistered(address indexed newAddress);
  event AddressesProviderUnregistered(address indexed newAddress);

  function getAddressesProvidersList() external view returns (address[] memory);

  function getAddressesProviderIdByAddress(address addressesProvider)
    returns (uint256);

  function registerAddressesProvider(address provider, uint256 id) external;

  function unregisterAddressesProvider(address provider) external;

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