Method visit_block_maybe

mypy/semanal.py:5438–5440

(self, b: Block | None)

        self.block_depth[-1] -= 1

    def visit_block_maybe(self, b: Block | None) -> None:
        if b:
            self.visit_block(b)

    def visit_expression_stmt(self, s: ExpressionStmt) -> None:
        self.statement = s