public Builder addMapper(JsonSchemaMapper jsonSchemaMapper) {
            mappers.add(Objects.requireNonNull(jsonSchemaMapper));
            return this;
        }
Adds a mapper used to update schema builders.

@param jsonSchemaMapper Mapper to add.
@return Returns the converter.
smithy-jsonschema/src/main/java/software/amazon/smithy/jsonschema/JsonSchemaConverter.java