Added (on)SchemaGenerated to JSchemaGenerator

Src/Newtonsoft.Json.Schema/Generation/JSchemaGenerator.cs

@@ -97,6 +97,12 @@ public virtual IContractResolver ContractResolver
             set => _contractResolver = value;
         }
 
+        /// <summary>
+        /// Is called each time a schema is generated.
+        /// Allows the user to manipulate the schema. 
+        /// </summary>
+        public Action<Type, JSchema>? SchemaGenerated;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="JSchemaGenerator"/> class.
         /// </summary>
@@ -135,5 +141,14 @@ public virtual JSchema Generate(Type type, bool rootSchemaNullable)
             JSchemaGeneratorInternal generator = new JSchemaGeneratorInternal(this);
             return generator.Generate(type, required);
         }
+
+        /// <summary>
+        /// Is called each time a schema is generated.
+        /// Allows the user to manipulate the schema. 
+        /// </summary>
+        internal protected virtual void OnSchemaGenerated(Type type, JSchema schema)
+        {
+            this.SchemaGenerated?.Invoke(type, schema);
+        }
     }
 }

Src/Newtonsoft.Json.Schema/Generation/JSchemaGeneratorInternal.cs

@@ -309,6 +309,8 @@ private JSchema GenerateInternal(Type type, Required? valueRequired, JsonPropert
                 PopulateSchema(schema, contract, memberProperty, resolvedRequired);
             }
 
+            _generator.OnSchemaGenerated(type, schema);
+
             return schema;
         }