classes are incompatible with `pp`

[kambala-decapitator]

According to the docs:

#pretty_print takes the pp argument, which is an instance of the PP class

but the method doesn't have such param (I guess there're more occurrences, haven't checked them all):

Xcodeproj/lib/xcodeproj/project.rb

Line 335 in ab3dfa5

def pretty_print

Xcodeproj/lib/xcodeproj/project/object/native_target.rb

Line 417 in ab3dfa5

def pretty_print

Reproduction (via Cocoapods):

post_install do |installer|
  pp installer
end