@classmethod
def has_column(cls, column):
    """Checks if the given column is selected in this view.

        This will look at all the selected columns and return True if the given
        one is one of them, False otherwise.
        Note that this will not work for storm expressions (like Sum or Count)

        :param column: The column to be searched.
        """
    for col in cls.cls_spec:
        if col is column:
            return True
    return False
