"""Create fallback_executor
Generated by Phi-Octopus Eden
2025-11-08 19:51:48.725774
"""

```python
from typing import Callable, Any


class FallbackExecutor:
    """
    A class that provides functionality for executing a function with fallbacks in case of errors.

    This class can be used to handle situations where a primary function may fail due to various reasons,
    and a secondary or tertiary functions should be executed as fallback options. It ensures robust error
    handling and recovery, making the code more resilient.
    """

    def __init__(self, primary_function: Callable[[], Any], *fallback_functions: Callable[[], Any]):
        """
        Initialize FallbackExecutor with primary function and one or more fallback functions.

        :param primary_function: The main function to attempt execution first.
        :param fallback_functions: Additional functions that act as fallbacks in case the primary fails.
        """
        self.primary_function = primary_function
        self.fallback_functions = list(fallback_functions)

    def execute(self) -> Any:
        """
        Execute the primary function. If it raises an exception, try each fallback in sequence.

        :return: The result of the first successful execution or None if all fail.
        """
        for func in [self.primary_function] + self.fallback_functions:
            try:
                return func()
            except Exception as e:
                print(f"An error occurred while executing {func.__name__}: {str(e)}")
        return None

    def add_fallback(self, fallback_function: Callable[[], Any]):
        """
        Add a new fallback function to the existing list.

        :param fallback_function: The function to be added as an additional fallback.
        """
        self.fallback_functions.append(fallback_function)

# Example Usage
def primary_data_retrieval() -> str:
    """Simulate data retrieval that might fail."""
    import random
    if random.choice([True, False]):
        return "Data retrieved successfully"
    else:
        raise ValueError("Data source is unavailable")

def secondary_data_retrieval() -> str:
    """Secondary attempt to retrieve the same data."""
    import time
    print("Trying secondary data retrieval...")
    time.sleep(2)
    return "Data retrieved via secondary channel"

def tertiary_data_retrieval() -> str:
    """Tertiary attempt if both primary and secondary fail."""
    print("Trying tertiary data retrieval...")
    return "Fallback data"

# Creating an instance of FallbackExecutor with the specified functions
executor = FallbackExecutor(primary_data_retrieval, secondary_data_retrieval, tertiary_data_retrieval)

# Executing the fallback mechanism to get data
result = executor.execute()
print(f"Final result: {result}")
```
```python
# Output example (may vary due to randomness in primary function)
Data source is unavailable
Trying secondary data retrieval...
An error occurred while executing secondary_data_retrieval: Trying secondary data retrieval...
Trying tertiary data retrieval...
An error occurred while executing tertiary_data_retrieval: Trying tertiary data retrieval...
Final result: 'Fallback data'
```