MetaschemaNode#jsi_indicated_schemas memoized

lib/jsi/metaschema_node.rb

@@ -67,13 +67,14 @@ def initialize(
         jsi_ptr: root_schema_ptr,
         jsi_schema_base_uri: nil, # supplying jsi_schema_base_uri on root bootstrap schema is not supported
       )
-      @bootstrap_indicated_schemas = jsi_ptr.tokens.inject(SchemaSet[root_bootstrap_schema]) do |bootstrap_indicated_schemas, tok|
+      our_bootstrap_indicated_schemas = jsi_ptr.tokens.inject(SchemaSet[root_bootstrap_schema]) do |bootstrap_indicated_schemas, tok|
         bootstrap_schemas = bootstrap_indicated_schemas.inplace_applicator_schemas(instance_for_schemas)
         child_indicated_schemas = bootstrap_schemas.child_applicator_schemas(tok, instance_for_schemas)
         instance_for_schemas = instance_for_schemas[tok]
         child_indicated_schemas
       end
-      our_bootstrap_schemas = @bootstrap_indicated_schemas.inplace_applicator_schemas(instance_for_schemas)
+      @indicated_schemas_map = jsi_memomap { bootstrap_schemas_to_msn(our_bootstrap_indicated_schemas) }
+      our_bootstrap_schemas = our_bootstrap_indicated_schemas.inplace_applicator_schemas(instance_for_schemas)
 
       our_bootstrap_schemas.each do |bootstrap_schema|
         if bootstrap_schema.jsi_ptr == metaschema_root_ptr
@@ -140,7 +141,7 @@ def initialize(
     # See {Base#jsi_indicated_schemas}
     # @return [JSI::SchemaSet]
     def jsi_indicated_schemas
-      bootstrap_schemas_to_msn(@bootstrap_indicated_schemas)
+      @indicated_schemas_map[]
     end
 
     # see {Base#jsi_child}