# File lib/rspec/mocks/example_methods.rb, line 134
      def self.included(klass)
        klass.class_eval do
          # This gets mixed in so that if `RSpec::Matchers` is included in
          # `klass` later, it's definition of `expect` will take precedence.
          include ExpectHost unless method_defined?(:expect)
        end
      end