[4] pry(nil):1> nesting
Nesting status:
--
0. main (Pry top level)
1. nil
[5] pry(nil):1> self.to_s
=> ""
[6] pry(nil):1> self.title = 'some new title'
NoMethodError: undefined method `title=' for nil:NilClass
from (pry):3:in `__pry__'
[7] pry(nil):1> self.body = 'some new body'
NoMethodError: undefined method `body=' for nil:NilClass
from (pry):4:in `__pry__'
[8] pry(nil):1> self.changes
NoMethodError: undefined method `changes' for nil:NilClass
from (pry):5:in `__pry__'