Add the value to this histogram.

        Args:
            value (int): The value. Values outside of ``10 <= x <= 600``
                will be raised to ``10`` or reduced to ``600``.

def add(self, value):
        """Add the value to this histogram.

        Args:
            value (int): The value. Values outside of ``10 <= x <= 600``
                will be raised to ``10`` or reduced to ``600``.
        """
        # If the value is out of bounds, bring it in bounds.
        value = int(value)
        if value < 10:
            value = 10
        if value > 600:
            value = 600

        # Add the value to the histogram's data dictionary.
        self._data.setdefault(value, 0)
        self._data[value] += 1
        self._len += 1