contract ERC223ReceivingContract {

    /// @dev Standard ERC223 function that will handle incoming token transfers.
    /// @param _from  Token sender address.
    /// @param _value Amount of tokens.
    /// @param _data  Transaction metadata.
    function tokenFallback(address _from, uint _value, bytes _data) public;

}
function tokenFallback(address _from, uint _value, bytes _data) public;
/// @dev Standard ERC223 function that will handle incoming token transfers.
/// @param _from  Token sender address.
/// @param _value Amount of tokens.
/// @param _data  Transaction metadata.