Fix usage of example for when its redefined

lib/rspec/its.rb

@@ -1,6 +1,8 @@
 require 'rspec/its/version'
 require 'rspec/core'
 
+RSpec::Core::ExampleGroup.define_example_method :__its_example
+
 module RSpec
   module Its
 
@@ -166,7 +168,7 @@ def should_not(matcher=nil, message=nil)
         options << {} unless options.last.kind_of?(Hash)
         options.last.merge!(:caller => its_caller)
 
-        example(nil, *options, &block)
+        __its_example(nil, *options, &block)
 
       end
     end

spec/rspec/its_spec.rb

@@ -9,6 +9,7 @@ module RSpec
           its([]) { expect(described_class).to be Its }
         end
       end
+
       context "with explicit subject" do
         subject do
           Class.new do
@@ -375,6 +376,20 @@ def terminator
             raise_error(ArgumentError, '`will_not` only supports block expectations')
         end
       end
+
+      context "when example is redefined" do
+        subject do
+          Class.new do
+            def will_still_work; true; end
+          end.new
+        end
+
+        def self.example(*_args)
+          raise
+        end
+
+        its(:will_still_work) { is_expected.to be true }
+      end
     end
   end
 end