interface IERC1400Partition {

    // Token Information
    function balanceOfByPartition(bytes32 partition, address tokenHolder) external view returns (uint256); // 1/10
    function partitionsOf(address tokenHolder) external view returns (bytes32[] memory); // 2/10

    // Token Transfers
    function transferByPartition(bytes32 partition, address to, uint256 value, bytes calldata data) external returns (bytes32); // 3/10
    function operatorTransferByPartition(bytes32 partition, address from, address to, uint256 value, bytes calldata data, bytes calldata operatorData) external returns (bytes32); // 4/10

    // Default Partition Management
    function getDefaultPartitions() external view returns (bytes32[] memory); // 5/10
    function setDefaultPartitions(bytes32[] calldata partitions) external; // 6/10

    // Operators
    function controllersByPartition(bytes32 partition) external view returns (address[] memory); // 7/10
    function authorizeOperatorByPartition(bytes32 partition, address operator) external; // 8/10
    function revokeOperatorByPartition(bytes32 partition, address operator) external; // 9/10
    function isOperatorForPartition(bytes32 partition, address operator, address tokenHolder) external view returns (bool); // 10/10

    // Transfer Events
    event TransferByPartition(
        bytes32 indexed fromPartition,
        address operator,
        address indexed from,
        address indexed to,
        uint256 value,
        bytes data,
        bytes operatorData
    );

    event ChangedPartition(
        bytes32 indexed fromPartition,
        bytes32 indexed toPartition,
        uint256 value
    );

    // Operator Events
    event AuthorizedOperatorByPartition(bytes32 indexed partition, address indexed operator, address indexed tokenHolder);
    event RevokedOperatorByPartition(bytes32 indexed partition, address indexed operator, address indexed tokenHolder);

    // Allowance
    event ApprovalByPartition(bytes32 indexed partition, address indexed owner, address indexed spender, uint256 value);

}
/**
 * @title IERC1400Partition partially fungible token standard
 * @dev ERC1400Partition interface
 */
function getDefaultPartitions() external view returns (bytes32[] memory); // 5/10

// 4/10
// Default Partition Management