# gdtest_many_big_classes > Test multiple big classes in one module ## Docs ### API Reference #### Classes > Main classes provided by the package - [Exporter](reference/Exporter.html): Data exporter with many targets - [Formatter](reference/Formatter.html): Output formatter with many styles - [Processor](reference/Processor.html): Data processor with many operations - [Transformer](reference/Transformer.html): Data transformer with many conversions - [Validator](reference/Validator.html): Data validator with many checks #### Exporter Methods > Methods for the Exporter class - [Exporter.to_file](reference/Exporter.to_file.html) - [Exporter.to_database](reference/Exporter.to_database.html) - [Exporter.to_api](reference/Exporter.to_api.html) - [Exporter.to_stream](reference/Exporter.to_stream.html) - [Exporter.to_clipboard](reference/Exporter.to_clipboard.html) - [Exporter.to_email](reference/Exporter.to_email.html) #### Formatter Methods > Methods for the Formatter class - [Formatter.as_table](reference/Formatter.as_table.html) - [Formatter.as_markdown](reference/Formatter.as_markdown.html) - [Formatter.as_html](reference/Formatter.as_html.html) - [Formatter.as_latex](reference/Formatter.as_latex.html) - [Formatter.as_plain](reference/Formatter.as_plain.html) - [Formatter.set_style](reference/Formatter.set_style.html) #### Processor Methods > Methods for the Processor class - [Processor.load](reference/Processor.load.html) - [Processor.filter](reference/Processor.filter.html) - [Processor.sort](reference/Processor.sort.html) - [Processor.group](reference/Processor.group.html) - [Processor.merge](reference/Processor.merge.html) - [Processor.deduplicate](reference/Processor.deduplicate.html) #### Transformer Methods > Methods for the Transformer class - [Transformer.to_json](reference/Transformer.to_json.html) - [Transformer.to_csv](reference/Transformer.to_csv.html) - [Transformer.to_xml](reference/Transformer.to_xml.html) - [Transformer.from_json](reference/Transformer.from_json.html) - [Transformer.from_csv](reference/Transformer.from_csv.html) - [Transformer.normalize](reference/Transformer.normalize.html) #### Validator Methods > Methods for the Validator class - [Validator.check_types](reference/Validator.check_types.html) - [Validator.check_required](reference/Validator.check_required.html) - [Validator.check_ranges](reference/Validator.check_ranges.html) - [Validator.check_patterns](reference/Validator.check_patterns.html) - [Validator.check_uniqueness](reference/Validator.check_uniqueness.html) - [Validator.validate_all](reference/Validator.validate_all.html)