added a generic inspector that catches everything

lib/pdf/inspector.rb

@@ -5,6 +5,7 @@
 require "pdf/inspector/extgstate"
 require "pdf/inspector/graphics"
 require "pdf/inspector/page"
+require "pdf/inspector/generic"
 
 module PDF
   class Inspector

lib/pdf/inspector/generic.rb

@@ -0,0 +1,19 @@
+module PDF
+  class Inspector 
+    class Generic < Inspector
+      attr_reader :calls
+
+      def initialize
+        @calls = []
+      end
+
+      def method_missing(*args)
+        @calls << args
+      end
+
+      def respond_to?(*args)
+        true
+      end
+    end
+  end
+end