Francis O'Hara

I added docstrings and type annotations for the `process()` function to make it easier for users to figure out how exactly the package can be used to extract text and...

[CsvIO] Scaffold CsvIOParseHelpers

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This PR closes #31703 by scaffolding the CsvIOParseHelpers. This enables the method implementations to happen in parallel PRs. ------------------------ Thank you for your contribution! Follow this checklist to help us...

### What needs to happen? Create a helper method within [CsvIOParseHelpers](https://github.com/apache/beam/issues/31703) that parses a cell String of a CSV record based on the [Schema.FieldType](https://beam.apache.org/releases/javadoc/current/org/apache/beam/sdk/schemas/Schema.FieldType.html). ### Issue Priority Priority: 2 (default...

### What needs to happen? Create a helper method within the [CsvIOParseHelpers](https://github.com/apache/beam/issues/31703) class for validating the [CSVFormat](https://javadoc.io/doc/org.apache.commons/commons-csv/1.8/org/apache/commons/csv/CSVFormat.html) in relation to the [Schema](https://beam.apache.org/releases/javadoc/current/org/apache/beam/sdk/schemas/Schema.html) of the CSV records being parsed. ### Issue...

### What needs to happen? Create a helper method within the [CSVIOParseHelpers](https://github.com/apache/beam/issues/31703) class for validating the [CSVFormat](https://javadoc.io/doc/org.apache.commons/commons-csv/1.8/org/apache/commons/csv/CSVFormat.html) object that encapsulates the format of the CSV records being parsed. ### Issue...

### What needs to happen? Create a helper method within [CsvIOParseHelpers](https://github.com/apache/beam/issues/31703) that builds a [List](https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/util/List.html) of [schema fields](https://beam.apache.org/releases/javadoc/current/org/apache/beam/sdk/schemas/Schema.Field.html) corresponding to the expected position of each field within the CSV record....

### What needs to happen? Create a utility class containing helper methods for parsing CSV. ### Issue Priority Priority: 2 (default / most normal work should be filed as P2)...