class Deleveraging:
    """
    #### Deleveraging refers to the process of reducing a company's debt-to-equity ratio by paying down debt or increasing equity.
    
    Attributes:
    - debt (float): The amount of debt a company has.
    - equity (float): The amount of equity a company has.
    
    Methods:
    - pay_down_debt: This method will reduce the company's debt by paying down a certain amount.
    - issue_equity: This method will increase the company's equity by issuing new shares.
    - calculate_debt_to_equity_ratio: This method will calculate the company's debt-to-equity ratio.
    """
    def __init__(self, debt, equity):
        self.debt = debt
        self.equity = equity
        
    def pay_down_debt(self, amount):
        """
        Reduces the company's debt by paying down a certain amount.
        
        Args:
        amount (float): The amount to be paid down.
        
        Returns:
        None
        """
        pass
    
    def issue_equity(self, amount):
        """
        Increases the company's equity by issuing new shares.
        
        Args:
        amount (float): The amount of new equity to be issued.
        
        Returns:
        None
        """
        pass
    
    def calculate_debt_to_equity_ratio(self):
        """
        Calculates the company's debt-to-equity ratio.
        
        Args:
        None
        
        Returns:
        The company's debt-to-equity ratio as a float.
        """
        pass
