Update README.md

natanfeitosa · Mar 6, 2023 · 8a93697 · 8a93697
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@@ -79,6 +79,12 @@ print(n.validate(2023)) # False
   > Add a mutation function than will run after the `validate` method. P.S. Will only be executed in the `parse` method
 * `parse(data): typeof data`
   > Run the `validate` method, the mutations and return a deep clone of data
+* `default(data): Self`
+  > Set a default value for when the validator receives None and you don't want to generate an error
+* `optional(): Self`
+  > Allow values None
+* `required(error_message=None): Self`
+  > Mark the schema as required. Does not allow values None
 
 ### `NumberSchema`
 inherits from [`BaseSchema`](#baseschema)