@Experimental(value=UNSPECIFIED)
See: Description
| Class | Description | 
|---|---|
| ContextualTextIO | PTransforms that read text files and collect contextual information of the elements in
 the input. | 
| ContextualTextIO.Read | Implementation of  ContextualTextIO.read(). | 
| ContextualTextIO.ReadFiles | Implementation of  ContextualTextIO.readFiles(). | 
| RecordWithMetadata | Helper Class based on  Row, it provides Metadata associated with each Record when reading
 from file(s) usingContextualTextIO. |