Begins an indented block. Must be used in a 'with' code block.
        All calls to the logger inside of the block will be indented.

def indent(self):
        """
        Begins an indented block. Must be used in a 'with' code block.
        All calls to the logger inside of the block will be indented.
        """
        blk = IndentBlock(self, self._indent)
        self._indent += 1
        return blk