"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-06 15:21:44.108449
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides a mechanism for executing a primary function and falling back to an alternative if it fails.
    
    Args:
        primary_function: The main function to execute. It should accept the same arguments as the fallback function.
        fallback_function: The function to use as a backup in case the primary function raises an exception or returns None.
    """
    def __init__(self, primary_function: Callable[..., Any], fallback_function: Callable[..., Any]):
        self.primary_function = primary_function
        self.fallback_function = fallback_function

    def execute(self, *args, **kwargs) -> Any:
        """
        Attempts to execute the primary function with provided arguments. If an exception is raised or it returns None,
        the fallback function is executed and its result returned.
        
        Args:
            *args: Arguments passed to both functions
            **kwargs: Keyword arguments passed to both functions
        
        Returns:
            The result of the primary function if successful, otherwise the result of the fallback function.
        """
        try:
            return self.primary_function(*args, **kwargs)
        except Exception as e:
            # Optionally log or handle the exception here before attempting the fallback
            pass
        result = self.fallback_function(*args, **kwargs) if callable(self.fallback_function) else None
        return result


# Example usage

def primary_add(a: int, b: int) -> int:
    """
    Adds two integers.
    
    Args:
        a (int): First integer to add
        b (int): Second integer to add
    
    Returns:
        int: The sum of the two integers.
    """
    return a + b


def fallback_add(a: int, b: int) -> int:
    """
    Adds two integers with an error-prone operation that can fail.
    
    Args:
        a (int): First integer to add
        b (int): Second integer to add
    
    Returns:
        int: The sum of the two integers or -1 if an error occurs.
    """
    return a + b + 1  # Simulate error by adding an incorrect value


# Creating FallbackExecutor instance with our functions
executor = FallbackExecutor(primary_add, fallback_add)

# Example execution
result = executor.execute(5, 7)  # Should return 12 if primary works, otherwise -13 (fallback)
print(f"Result: {result}")
```