def __call__(self, shape, dtype=None):
        """Returns a tensor object initialized as specified by the initializer.

        Args:
            shape: Shape of the tensor.
            dtype: Optional dtype of the tensor.
        """
        raise NotImplementedError(
            "Initializer subclasses must implement the `__call__()` method."
        )
Returns a tensor object initialized as specified by the initializer.

        Args:
            shape: Shape of the tensor.
            dtype: Optional dtype of the tensor.
        
keras/src/initializers/initializer.py