make private methods and put query_cve method as main public method

microsoft_kb/microsoft_kb_checker.rb

@@ -64,6 +64,28 @@ class MicrosoftKbChecker
     'Windows Server 2012 R2',
     'Windows Server 2012 R2 (Server Core installation)'
   ].freeze
+  
+  def query_cve
+    #TODO: handle error msg better
+    if os_available?
+      response = make_request
+      if response.code == 200
+        json = parse_json(response)
+        os_results = select_os(json)
+        if os_results.nil?
+          'Product not found in response data.'
+        else
+          kbs_for_os(os_results)
+        end
+      else
+        'Problem with HTTP response data.'
+      end
+    else
+      'Operating system not found.'
+    end
+  end
+
+  private
 
   def cve_url
     cve = options[:cve_id]
@@ -86,25 +108,7 @@ class MicrosoftKbChecker
     AVAILABLE_OS.include?(options[:os_name])
   end
 
-  def query_cve
-    #TODO: handle error msg better
-    if os_available?
-      response = make_request
-      if response.code == 200
-        json = parse_json(response)
-        os_results = select_os(json)
-        if os_results.nil?
-          'Product not found in response data.'
-        else
-          kbs_for_os(os_results)
-        end
-      else
-        'Problem with HTTP response data.'
-      end
-    else
-      'Operating system not found.'
-    end
-  end
+
 
   def select_os(json)
     json.dig('affectedProducts').select do |os|