hello.rb

[1] (pry) main: 0> class SomeClass
[1] (pry) main: 0*   def hello
[1] (pry) main: 0*     SomeOtherClass.new.beta
[1] (pry) main: 0*   end  
[1] (pry) main: 0* end  
=> nil
[2] (pry) main: 0> class SomeOtherClass
[2] (pry) main: 0*   def beta
[2] (pry) main: 0*     puts "my method name is #{__method__} inside the #{self.class} class"
[2] (pry) main: 0*     puts "and my caller is the #{binding.of_caller(1).eval('self.class')} class"
[2] (pry) main: 0*   end  
[2] (pry) main: 0* end  
=> nil
[5] (pry) main: 0> require 'binding_of_caller'
=> true
[6] (pry) main: 0> SomeClass.new.hello
my method name is beta inside the SomeOtherClass class
and my caller is the SomeClass class
=> nil
[7] (pry) main: 0>