slightly improve readability

lib/api/decorators/schema.rb

@@ -30,9 +30,10 @@
 module API
   module Decorators
     class Schema < Single
-      def self.schema(property,
+      class << self
+        def schema(property,
                         type:,
-                      title: represented_class.human_attribute_name(property),
+                        title: make_title(property),
                         required: true,
                         writable: true,
                         min_length: nil,
@@ -51,9 +52,9 @@ module API
                    writeable: false
         end
 
-      def self.schema_with_allowed_link(property,
-                                        type: property.to_s.camelize,
-                                        title: represented_class.human_attribute_name(property),
+        def schema_with_allowed_link(property,
+                                          type: make_type(property),
+                                          title: make_title(property),
                                           href_callback:,
                                           required: true,
                                           writable: true)
@@ -76,9 +77,9 @@ module API
                    }
         end
 
-      def self.schema_with_allowed_collection(property,
-                                              type: property.to_s.camelize,
-                                              title: represented_class.human_attribute_name(property),
+        def schema_with_allowed_collection(property,
+                                                type: make_type(property),
+                                                title: make_title(property),
                                                 values_callback:,
                                                 value_representer:,
                                                 link_factory:,
@@ -106,7 +107,18 @@ module API
                    }
         end
 
-      def self.represented_class
+        def represented_class
+        end
+
+        private
+
+        def make_title(property_name)
+          represented_class.human_attribute_name(property_name)
+        end
+
+        def make_type(property_name)
+          property_name.to_s.camelize
+        end
       end
 
       def current_user